The 10 Most Popular Coding Challenge Websites [Updated for 2021]

A great way to improve your skills when learning to code is by solving coding challenges. Solving different types of challenges and puzzles can help you become a better problem solver, learn the intricacies of a programming language, prepare for job interviews, learn new algorithms, and more.

Below is a list of some popular coding challenge websites with a short description of what each one offers.

1. TopCoder

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TopCoder is one of the original platforms for competitive programming online. It provides a list of algorithmic challenges from the past that you can complete on your own directly online using their code editor. Their popular Single Round Matches are offered a few times per month at a specific time where you compete against others to solve challenges the fastest with the best score.

The top ranked users on TopCoder are very good competitive programmers and regularly compete in programming competitions. The top ranked user maintains his own blog titled Algorithms weekly by Petr Mitrichev where he writes about coding competitions, algorithms, math, and more.

2. Coderbyte

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Coderbyte provides 200+ coding challenges you can solve directly online in one of 10 programming languages (check out this example ). The challenges range from easy (finding the largest word in a string) to hard (print the maximum cardinality matching of a graph).

They also provide a collection of algorithm tutorials , introductory videos, and interview preparation courses . Unlike HackerRank and other similar websites, you are able to view the solutions other users provide for any challenge aside from the official solutions posted by Coderbyte.

3. Project Euler

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Project Euler provides a large collection of challenges in the domain of computer science and mathematics. The challenges typically involve writing a small program to figure out the solution to a clever mathematical formula or equation, such as finding the sum of digits of all numbers preceding each number in a series.

You cannot directly code on the website in an editor, so you would need to write a solution on your own computer and then provide the solution on their website.

4. HackerRank

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HackerRank provides challenges for several different domains such as Algorithms, Mathematics, SQL, Functional Programming, AI, and more. You can solve all the challenge directly online (check out this example ).

They provide a discussion and leaderboard for every challenge, and most challenges come with an editorial that explains more about the challenge and how to approach it to come up with a solution.

Currently, if you don't solve the problem, then you can't see the solution of others. If you also try to check the editorial before solving the problem, then you won't get the point for solving the problem at all.

As an example, here I haven't solved the problem, and I am trying to check others' submissions:

problem-not-solved-yet

And here, I haven't solved the problem, and I am trying to check the editorial:

problem-not-solved-lost-point

HackerRank also provides the ability for users to submit applications and apply to jobs by solving company-sponsored coding challenges.

5. CodeChef

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CodeChef is an Indian-based competitive programming website that provides hundreds of challenges. You are able to write code in their online editor and view a collections of challenges that are separated into different categories depending on your skill level (check out this example ). They have a large community of coders that contribute to the forums, write tutorials , and take part in CodeChef’s coding competitions .

6. Exercism.io

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Exercism is a coding challenge website that offers 3100+ challenges spanning 52 different programming languages. After picking a language that you'd like to master, you tackle the coding challenges right on your machine (Exercism has their own command line interface that you can download from GitHub).

It is a bit different from other challenge websites, however, because you work with a mentor after completing each challenge. The mentor reviews your answers online and helps you improve them if needed. Once your answers have been approved and submitted, you unlock more challenges.

7. Codewars

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Codewars provides a large collection of coding challenges submitted and edited by their own community. You can solve the challenges directly online in their editor in one of several languages. You can view a discussion for each challenges as well as user solutions.

8. LeetCode

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LeetCode is a popular Online Judge that provides a list of 190+ challenges that can help you prepare for technical job interviews. You can solve the challenges directly online in one of 9 programming languages. You are not able to view other users' solutions, but you are provided statistics for your own solutions such as how fast your code ran when compared to other users' code.

They also have a Mock Interview section that is specifically for job interview preparation, they host their own coding contests , and they have a section for articles to help you better understand certain problems.

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Sphere Online Judge (SPOJ) is an online judge that provides over 20k coding challenges. You are able to submit your code in an online editor . SPOJ also hosts their own contests and has an area for users to discuss coding challenges. They do not currently provide any official solutions or editorials like some other websites do, though.

10. CodinGame

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CodinGame is a bit different from the other websites, because instead of simply solving coding challenges in an editor, you actually take part in writing the code for games that you play directly online. You can see a list of games currently offered here and an example of one here . The game comes with a problem description, test cases, and an editor where you can write your code in one of 20+ programming languages.

Although this website is different than typical competitive programming websites such as the ones mentioned above, it is still popular amongst programmers who enjoy solving challenges and taking part in contests.

This list was based on a few things: my own experiences using the websites, some Google searches , Quora posts , and articles such as this one and this one . I also frequented some forums and subreddits such as r/learnprogramming to see what websites were usually recommended by the users there. Disclaimer: I work at Coderbyte which is one of the websites mentioned above.

CEO & Founder at Coderbyte.

If this article was helpful, share it .

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10 websites to practice coding problems: Our picks

Whether you're just starting out as a coder or want to advance your coding skills, tackling programming problems is part of the plan. 

Convenient, free, and even fun, coding problem websites challenge your abilities with individual exercises, friendly challenges, and insightful assessments.

Practicing your coding through these websites may increase your knowledge, build your skills, and prepare you for programming job interviews. 

Top websites for practicing your coding skills

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Should a humanities major learn to code?

Can a humanities student learn coding? Absolutely. Coding is not strictly for STEM students — it can benefit you no matter your degree.

How hard is it to learn coding ? Starting from scratch can be difficult, but coding challenges designed to test and advance your skills may help. We rounded up 10 great websites for coding problems and listed them alphabetically for you. 

Each website offers a collection of resources for learning coding or advancing what you already know. 

1. CodeChef

CodeChef lets you choose among thousands of problems to practice skills like sorting, data structures, and dynamic programming. Problems are sortable by difficulty. Code Chef's practice problems allow you to answer in one of over 50 programming languages as you prepare for its internal or external monthly contests. 

CodeChef offers self-guided learning opportunities and mentoring programs alongside a community of coders, coding bootcamps, and tech certification programs. 

2. Coderbyte

Designed for coding practice and improvement, Coderbyte offers code challenges and courses aimed at helping you prepare for job interviews. 

Coderbyte had over three million solutions with challenges in more than 25 languages. Starter courses in algorithms, JavaScript, Ruby, and Python accompany interview kits and career resources. 

You can sign up for a free challenge and free trial. A monthly subscription to Coderbyte costs $35 and an annual subscription is $150. Both give you access to all of Coderbyte's resources. 

3. Codewars

Launched in 2012, Codewars provides practice kata, or small coding exercises, that you advance through as you build your skills. Codewars' kata are available in nearly 60 programming languages and in levels from beginner to advanced.

You can develop your own kata, engage with the Codewars community, and master one or multiple languages in the process. Feedback and creative learning facilitate creative thinking and innovation among Codewars' users. Codewars offers resources for educators and companies as well. 

4. CodinGame

With more than 25 supported languages, CodinGame provides challenge-based programming training through games, puzzles, and competitions. 

CodinGame's resources let you build your programming abilities, learn new concepts, and interact with fellow coders through easy, medium, hard, and very hard exercises.

CodeinGame's leaderboard and prizes earn you recognition from your peers and track your progress. Free live streams, blogs, and discussion forums for developers accompany sourcing, screening, and retention programs for recruiters. 

5. Geektastic

With human-reviewed technical assessments, Geektastic lets companies customize coding challenges for talent acquisition and engineering team training. If you have coding experience, you can join Geektastic's reviewer community to create and test those challenges — and get paid to review candidates' performance. 

Code challenges are offered in Java, Python, and PHP. Geektastic also offers skills assessments in Java, Javascript, and basic coding. Joining as a developer comes with no cost, while flexible pricing accommodates businesses of any size. 

6. HackerRank

HackerRank serves as a technical interview platform, but also provides coding practice to over 18 million users. Challenges offered by HackerRank cover topics including algorithms, Java, Python, Ruby, and data structures. 

HackerRank's challenges allow you to test your code, debug it, and win one of its sprint, company, language, or timed challenges. You can also earn certifications in specific skills or complete interview preparation kits. Pricing ranges from $25/month for interview content to $819/month team subscriptions.

7. LeetCode

LeetCode provides more than 2,250 practice problems to its programmer community. Individual challenges in topics like algorithms, database structures, and dynamic programming accompany entire study plans. 

LeetCode's programming skills study plan integrates three modules offered at easy, medium, or hard difficulty levels. LeetCode supports 14 programming languages and houses a playground tool to help you test, debug, and write code. 

Sign-up is free. LeetCode Premium offers access to additional tools and premium content for a monthly subscription of $35 or an annual fee of $159. 

8. Project Euler

Named for mathematician Leonhard Euler, Project Euler began in 2001. Recent and archival content is available for registered users at no cost. 

Project Euler offers computational programming problems combining mathematics with computer and programming skills. With 108 programming languages and more than one million users, Project Euler provides problems with varying difficulty.

Sphere Online Judge, or SPOJ , trains users to code and build efficient algorithms through more than 20,000 practice problems. Scoring categories for problems include challenges, tutorials, and riddles. Rankings and a status board accompany running contests that support more than 45 programming languages and compilers. 

SPOJ offers a flexible testing system to automatically assess user-submitted programs. Users can design their own contests or take part in an online course at all programming levels, but it is ideal for students.

10. TopCoder

TopCoder's community of designers, developers, data scientists, and competitive programmers build their skills, show their expertise, and earn money as they improve their coding abilities. TopCoder pays individuals for their work, sells it to corporate clients, and hosts competitions designed to highlight top coding talent worldwide.

Customers use TopCoder to hire freelancers on-demand, set challenges for the coding community, and find teams for projects.

This article was reviewed by Monali Mirel Chuatico

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In 2019, Monali Mirel Chuatico graduated with her bachelor's in computer science, which gave her the foundation that she needed to excel in roles such as data engineer, front-end developer, UX designer, and computer science instructor.

Monali is currently a data engineer at Mission Lane. As a data analytics captain at a nonprofit called COOP Careers , Monali helps new grads and young professionals overcome underemployment by teaching them data analytics tools and mentoring them on their professional development journey.

Monali is passionate about implementing creative solutions, building community, advocating for mental health, empowering women, and educating youth. Monali's goal is to gain more experience in her field, expand her skill set, and do meaningful work that will positively impact the world.

Monali Mirel Chuatico is a paid member of the Red Ventures Education Integrity Network. 

Last reviewed April 21, 2022.

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Posted on Aug 12, 2021 • Updated on Sep 12, 2021

11 Websites To Practice You Coding And Your Problem Solving Skills

11 websites to practice your coding and problem-solving skills.

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We're a place where coders share, stay up-to-date and grow their careers.

Achieve mastery through challenge

Improve your development skills by training with your peers on code kata that continuously challenge and push your coding practice.

best programming problem solving websites

Sharpen your coding skills

Challenge yourself on small coding exercises called "kata". Each kata is crafted by the community to help you strengthen different coding techniques. Master your current language of choice, or quickly pick up any of the 55+ programming languages supported.

best programming problem solving websites

Get instant feedback

Solve kata with your coding style right in the browser and use test cases (TDD) to check it as you progress. Retrain with new, creative, and optimized approaches. Find all of the bugs in your programming practice.

best programming problem solving websites

Earn ranks and honor

Kata code challenges are ranked from beginner to expert level. As you complete higher-ranked kata, you level up your profile and push your software development skills to your highest potential.

best programming problem solving websites

An engaged software development community

Codewars is a collective effort by its users. They are creators—authoring kata to teach various techniques, solving kata with solutions that enlighten others, and commenting with constructive feedback.

Community members added every month

Kata completed every month

Kata created by our community

Tap into the collective wisdom

Compare your solution with others after each kata for greater understanding. Discuss kata, best practices, and innovative techniques with the community. Have your mind blown by how different other solutions can be from your own.

best programming problem solving websites

Create your own kata

Author kata that focus on your interests and train specific skill sets. Challenge the community with your insight and code understanding. Create everything from common developer interview questions to challenges that push the limits of your creativity. Gain honor within the coding dojo.

best programming problem solving websites

What can I use Codewars for?

From beginner to expert and beyond...

Get new perspectives

Solve challenges then view how others solved the same challenge. Pickup new techniques from some of the most skilled developers in the world.

Learn new languages

Solve challenges in a language you are comfortable with, then do it in a language you want to improve with. Level up across different languages.

Compete with peers

Compete against your friends, colleagues, and the community at large. Allow competition to motivate you  towards mastering your craft.

Extremely well done and an excellent example of mastery learning.

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Accidentally got addicted to codewars, oops.

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Build self-confidence

Not sure if you are progressing well as a programmer? Push yourself to your limits and show yourself what you are really made of.

Become a mentor

Lend your expertise to others, either indirectly by contributing great solutions or directly by creating your own kata and reviewing code.

Insights from Codewars staff and community.

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11 Best Websites to Practice Coding for Beginners in 2024

best programming problem solving websites

Coding is not a spectator sport. To develop your skills, you must write it yourself. Here are the best websites to practice coding.

Indeed’s Best Jobs of 2023 ranked America’s most highly prized careers based on demand, pay, and potential for growth. These careers included:

  • Full-stack developer (#1)
  • Data engineer (#2)
  • Back end developer (#6)
  • Site reliability engineer (#7)
  • Director of data science (#25)

That means half of the top ten best jobs in America require coding skills‌. But, if you don’t have coding skills, where do you go to learn them?

At Flatiron School , we help pave the way for your transition into the tech industry. Our comprehensive programs are designed to provide you with the foundational knowledge you need to develop the coding and programming skills that are in such high demand. Our programs help students discover their full potential and pursue the career of their dreams.

But maybe you’re just ready to dip your toe in and explore your options? There are several coding for beginners resources online.   So whether you’re looking to learn a new coding language or try out programming for the first time, it’s worth looking into coding practice sites for beginners.

11 Best Coding Practice Sites

Coding is not a spectator sport. It’s great to watch tutorials and read books on how to code, but to truly develop your programming proficiency, you must write the language yourself. Here are some of the best places to practice your coding skills.

1. Coderbyte

As you begin to develop your coding skills, you may be unsure what to practice first. It helps to work on real-world problems other coding professionals have faced—and Coderbyte has exactly that. With over 2,000 challenges on front and back end development, data structures, and algorithms that professionals have faced in their interviews, you’ll be able to hone your skills on examples that really matter.

Pros of Coderbyte

‌Coderbyte lets you use over 30 different programming languages and has a library of over 3 million solutions you can learn from.

Cons of Coderbyte

Coderbyte has a user interface that’s often complex for new users to navigate, so it might take some time getting used to this site.

2. Pluralsight

If you’re seeking a comprehensive learning platform that allows you to learn at your own pace, go with Pluralsight . You’ll develop a strong skill set in Python, JavaScript, HTML, and CSS, just to name a few. You can also receive learning recommendations based on what you’re focusing on.

Pros of Pluralsight

The platform provides a personalized learning experience as you can customize your training sessions with multiple features, including multiple language support.

Cons of Pluralsight

Users have minimal interaction with course instructors and industry experts, which makes it difficult to gain valuable feedback.   

Unlock over 10,000 interactive coding challenges with Edabit . This free platform provides courses that are simple and practical. You can also access beginner tutorials to make the most of your learning experience. Plus, the challenges are ranked by difficulty, so you know exactly what level you’re at in your programming expertise.

Pros of Edabit

Learners gain access to a code editor that’s built into the platform. That way, users can create a code without having to switch to another application.

Cons of Edabit

You don’t gain a certificate for completing any of the tutorials. Also, some users have stated that the platform used outdated programming languages. 

4. CodinGame

Wanna play a game? CodinGame lets you practice your coding through fun games and code challenges. With single-round matches and both solo and multiplayer modes, this platform gives you a chance to practice coding the fun way.  

Pros of CodinGame

There are over 25 available programming languages.

Cons of CodinGame

Some users take issue with the size of the timers displayed on the programming tests. Unless you look carefully for the timer, you may miss the opportunity to submit your questions on time. 

5. CodeChef

Competition can be the best motivator to learn, and CodeChef offers exactly that. This platform lets users measure their skills by practicing more than 3,000 problems. You can compete against other coders, which creates great coding practice for beginners. But don’t worry—the competition is friendly, and participants often write posts and tutorials to help each other learn.

Pros of CodeChef

CodeChef users will be pleased to know that there is an active, supportive community that encourages growth. 

Cons of CodeChef

Users report that some practice problems lack clarity.

6. Project Euler

Project Euler offers a chance to solve challenging math problems with script. Over 1 million users have solved at least one problem on the site.

Pros of Project Euler

The site offers 111 programming languages.

Cons of Project Euler

If math isn’t your strongest subject, Project Euler may not be for you. The math-oriented programming languages get quite complex as you progress through the challenges.

7. TopCoder

Join a community of 1.7 million technical experts at TopCoder . On the learning side, they have an abundance of weekly challenges and explanations, along with challenging competitions that help you rise to the coding occasion.

Pros of TopCoder

The site is one of the most established platforms with an active user base.

Cons of TopCoder

Some users have experienced difficulty navigating the program’s user interface. Also, if you submit a support request, it may go unnoticed as their support system lacks efficiency.

8. One Month

Learning coding and web development in a span of 30 days with One Month . You can select from a variety of basic courses that cover HTML, Python, SQL, Ruby, and more! You also get to create real-world projects.

Pros of One Month

This user-friendly resource is great if you’re just looking to learn the fundamentals of coding and web development.

Cons of One Month

If you decide to switch to another programming platform, just note that there are no refunds available.

9. Geektastic

With detailed solutions to their multiple-choice and peer-reviewed coding challenges, Geektastic has a wealth of resources for programmers and a growing community of over 26,000 developers.

Pros of Geektastic

In addition to their interactive challenges and competitions, coders that rank high enough might even be allowed to join the review team. Members of this team get paid to review coding submissions for clients seeking a solution to their own coding projects.

Cons of Geektastic

Some users have raised concerns with how the challenges are scored, stating that they don’t reflect a candidate’s programming skills well. 

10. Geeks for Geeks

Made by developers for developers, Geeks for Geeks offers coding content for programmers of all skill levels, including beginners. Exercises in data structures, machine learning, web development, and much more are available.

Pros of Geeks for Geeks

Competitive challenges offer interactivity and a space to share coding solutions.

Cons of Geeks for Geeks

Geeks for Geeks primarily provides information in English, which means non-English speakers could run into trouble with the resources available. The website also has limited multimedia resources, mostly relying on text-based information.  

11. HackerEarth

What’s great about HackerEarth is that users can create and customize their coding assessments for technical positions. 

With HackerEarth, you’ll join a community of 7.6 million developers, participate in several programming challenges and customize your tests for a specific role.

Pros of HackerEarth

Not only does the website offer support in multiple languages, but it also includes AI proctoring to ensure exam results are accurate and reliable. 

Cons of HackerEarth

You might run into trouble navigating to specific problem types because the website has troublesome indexing and prioritization. 

Blogs to Help You Learn

They may be less interactive than competitions and online courses, but plenty of coding for beginners blogs are available to help new students gain programming proficiency. Here are some of our favorites.

1. The Crazy Programmer

This blog isn’t designed to give hands-on coding experience, but there’s a wealth of programming knowledge on pretty much everything else. From useful books and articles to tutorials and Q&As, The Crazy Programmer is a great blog to follow for those just learning to code.

2. The Hackr.io Blog

If you’re looking for courses or content that will grow your coding skills, The Hackr.io Blog will help you look in the right places. Written by a community of programming professionals, this blog is devoted to grading the most useful coding content so readers know they’re relying on quality sources. 

The blog touches on a wide range of topics, though, so those looking for resources on a specific language may find their content hit and miss.

3. Better Programming

As its name suggests, this blog is devoted to improving your programming. With posts on a range of topics in web design and coding, Better Programming features content from multiple industry pros on both introductory and advanced content. There’s truly something for everyone. As with Hackr.io, those concentrating on a specific topic may want something more focused.

Flatiron School: The Ultimate Coding Solution

What makes us different from coding websites? Here at Flatiron School, we work tirelessly to help students gain the foundational coding skills they need to begin a career in the tech industry. Combining flexible program options, industry-leading education, and up to 180 days of Career Coaching upon graduation, Flatiron School gives our students the jumping-off point they need to begin a rewarding tech career.  

Our programs contain a mixture of lectures, group work, instructor guidance, and community support to both equip our students with technical skills and prepare them to work effectively on a team. No matter what level a student begins at, Flatiron School’s Software Engineering program can take you from a complete beginner to industry-ready in as little as 15 weeks. 

If you’re committed to a career in tech, we’ll teach you the skills you need to succeed. 

Apply today to get started . Not ready to apply? No problem – test out our material with Free Software Engineering Prep Work or download the course syllabus .

If you’re an employer looking to bring new talent to your team, check out our tech training solutions and see how you can invest in your company’s growth. 

Disclaimer: The information in this blog is current as of 23 October 2023. Current policies, offerings, procedures, and programs may differ.

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The Best Coding Challenges Websites To Practice Problem Solving

The Best Coding Challenges Websites To Practice Problem Solving

There are a plethora of websites where you can practice Data Structures and Algorithms questions. Even though there are a lot of choices, beginners might have a difficult time choosing one.

Why? Because the majority of these websites are tailored to experienced developers. They feel overwhelming, and it feels like there is no support for you.

I used to jump between LeetCode, HackerRank, and other websites, trying to find "the one." Thus, in this article, I want to list the best coding challenges for code newbies. Let us see what these websites are.

Arguably, Exercism is one of the best coding challenges websites for beginners. The main reason is that they provide a mentor for you. That is, each time you submit a challenge, a mentor checks it for you, and it approves it or suggests changes. Only when they approve your solution you can move forward to the next one.

Having a mentor is incredibly valuable, and you progress faster. A mentor can guide you and tell you how and where to improve. It is something that helps you tremendously.

Besides that, another plus is that you code the solution on your laptop. You download a template, solve the problem, and then you upload it using their CLI. Therefore, you feel more comfortable using your favorite IDE and tools.

Lastly, they have 3414 exercises, and you can choose between 51 programming languages. As a result, you have plenty of problems to solve.

In conclusion, Exercism is an excellent platform for beginners for the fact that you have mentors. You are less likely to give up, and you progress faster.

Another website is Coderbyte, which has more than 200 coding challenges. Moreover, you can choose to solve the coding challenges in ten programming languages.

The outstanding feature of this website is that you can see other people's solutions. That means you can compare your answer to others, and hopefully learn something. Besides that, there is also an official solution for almost every challenge. If you get stuck on a problem, you can always inspire from the official answer.

What I liked the most about Coderbyte is that the difficulty level slowly builds up. Unlike other websites, where even the easy questions are difficult. That makes it an excellent choice for beginners because they are slowly building their confidence by solving easier challenges. As a result, they are less likely to give up.

Thus, I highly recommend Coderbyte. When I prepared for my job interviews, I used Coderbyte alongside Exercism. They are a great combo.

Codewars is another platform tailored for beginners to intermediate developers. As with other similar platforms, you solve programming challenges, which they call "katas." You solve the katas in the browser and use TDD test cases to check your solutions.

Each time you complete a kata, you progress through the ranks and get more difficult challenges. Moreover, you can create new coding challenges and submit them to Codewars. That means other people can solve your challenge. In fact, that is how the website works. People create katas, they submit it, and other users solve them.

Besides that, each kata has a discussion area where people can collaborate or discuss the challenge. You can get help or help other people. It is a useful feature when you want to see different solutions or when you get stuck. Therefore, I highly recommend Codewars. It is a fun and engaging platform to test your knowledge.

HackerRank is a popular website, and for a good reason. On HackerRank, you can practice:

  • Data Structures
  • Linux Shell

Besides that, you can also learn JavaScript, Python, Java, React, Angular, and many more. It feels like it is more than a coding challenge website at this point.

Moreover, many companies use HackerRank for their technical interviews. Thus, familiarizing yourself with the platform can be a big bonus. However, one of the coolest features is that you can apply to jobs by solving challenges from various companies.

Therefore, HackerRank is a great website to practice Data Structures, Algorithms, and much more. You can also get React, Angular, Python, and other certificates, making you stand out from a pool of candidates. Again, once you get more experience, try solving the challenges from the various companies, and you might get lucky!

Experiment with the websites, and see which one works for you. If you are a code newbie, I would recommend starting with Exercism, then Coderbyte, and other popular websites like HackerRank and LeetCode.

The coding challenge websites are:

  • Exercism.io

Share this article on social media and let me know which one you prefer. Make sure to tag me ( @catalinmpit ) or daily.dev (@dailydotdev), so we can reply!

Catalin publishes programming and software development articles on his blog.

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Developer Pitstop

Best Coding Challenge Websites: Level Up Your Skills Today

Are you looking to hone your coding skills and tackle new programming challenges? You’re in the right place! Coding challenge websites offer countless opportunities to test your abilities, improve your problem-solving skills, and grow as a developer. As someone who’s used these sites for years, I can personally attest to the role these websites play in enhancing programming skills and opening doors to better career prospects.

These platforms enable you to work on relevant, real-world problems and learn from the best. You’ll not only acquire new knowledge but also expand your professional network. Engaging with fellow programmers and industry veterans provides a chance to gain valuable insights and stay current with best practices and emerging trends.

With so many coding challenge websites available, it’s essential to find those that cater to your skill level, interests, and goals. So, whether you’re a novice dipping your toes into the programming pool or an experienced developer seeking some friendly competition, there’s a platform out there for you. Stay tuned, as we’ll be delving into the best coding challenge websites that’ll help take your coding expertise to new heights.

Top Picks for Coding Challenge Websites

best programming problem solving websites

If you’re looking to improve your programming skills and take on some coding challenges, you’ve come to the right place. We’ve compiled a list of top coding challenge websites that cater to a variety of skill levels and languages. These platforms are perfect for honing your skills, preparing for job interviews, or even just having fun with code. Let’s dive into our top picks .

1. LeetCode : This popular platform is considered one of the best for preparing for technical interviews. It’s designed specifically to help you tackle the toughest coding challenges, and it offers an extensive collection of questions and contests. You’ll find challenges in various topic areas like data structures, algorithms, databases, and shell programming. With over 1600 questions in its repository, there’s always something new and challenging to work on.

  • Languages supported: C++, Java, Python, and more.
  • Pros: Active community, extensive problem set, company-specific preparation.
  • Cons: Subscription required for some features.

2. HackerRank : Another great option is HackerRank, a website that offers coding challenges for programmers of all skill levels. The platform features a wide range of topics, including data structures, algorithms, artificial intelligence, and databases. What sets HackerRank apart is its community of 11 million developers who share their knowledge and experience, making it easier for you to learn.

  • Languages supported: 45+ programming languages.
  • Pros: Comprehensive content, strong community, and job opportunities.
  • Cons: Challenging problems can be daunting for beginners.

3. CodeSignal : CodeSignal is an excellent resource for both beginners and experienced coders. It offers a gamified experience with coding challenges, allowing you to improve your coding skills while having fun. The platform is also known for its strong focus on connecting users with job opportunities in tech companies.

  • Languages supported: Java, JavaScript, Python, SQL, and more.
  • Pros: Fun gamified experience, solid interview preparation, and job placement opportunities.
  • Cons: Not as many challenges as other platforms.

4. CodeChef : If you’re interested in competitive programming, CodeChef is the platform for you. It hosts monthly programming contests and boasts an impressive catalog of problems submitted by a global community of users. CodeChef is renowned for its extensive problem set and educational content, making it an invaluable resource for serious coders.

  • Languages supported: 50+ programming languages.
  • Pros: Large problem set, strong community, and competitive programming.
  • Cons: Interface may be less polished than others on the list.

Choose the platform that best suits your needs, skills, and desired coding path. Each of these mentioned platforms has unique features and strengths that can help you become a better programmer . Start taking on challenges today and watch your coding skills soar!

Why Choose Online Coding Competitions?

Online coding competitions can be a game-changer for programmers aiming to improve their skills, keep up with industry trends, and build a strong professional portfolio. So let’s dive into the top reasons why you should participate in these challenges.

  • Skill enhancement : Taking part in coding competitions exposes you to various algorithms, languages, tools, and frameworks. This hands-on experience allows you to sharpen your coding skills, learn new approaches, and gain a deeper understanding of programming concepts.
  • Networking : These online events provide an excellent platform for connecting with like-minded programmers . You can share ideas, learn from others’ experiences, and even find potential collaboration opportunities.
  • Challenging yourself : Facing real-life coding problems pushes you to think out of the box, using critical thinking and problem-solving skills. As you progress through the competition, you’ll encounter increasingly complex challenges that’ll put your abilities to the test.
  • Attractive rewards : Numerous coding competitions offer attractive awards, ranging from cash prizes to internships and job opportunities. With a bit of dedication and hard work, you can potentially earn noteworthy achievements to showcase on your resume.
  • Creating a strong portfolio : Participating in coding competitions adds value to your professional profile. Potential employers can see your dedication to skill development and problem-solving abilities. This can make you stand out from other applicants in a competitive job market.

If you’re considering joining a coding competition, here’s a quick rundown of some popular platforms:

  • LeetCode : A platform that offers practice questions and coding contests focused on data structures, algorithms, and databases.
  • HackerRank : Provides a vast array of coding challenges across multiple domains such as algorithms, artificial intelligence, and databases.
  • Codeforces : A competitive programming platform with regular contests, problem-archives, and rankings based on performance.
  • Topcoder : Hosts global coding competitions tackling real-world problems in areas like software development, data science, and graphic design.

In summary, online coding competitions are an exceptional way to expand your programming skills, network with peers, and push your limits. They can help set you apart in a fiercely competitive job market. Start participating in these challenges today and watch your coding abilities soar!

Discovering Language-Specific Platforms

When you’re looking for the best coding challenge websites, it’s essential to find platforms dedicated to specific programming languages. These language-specific platforms will help you sharpen your skills and deepen your understanding of your chosen language. Here’s a roundup of some noteworthy platforms:

  • LeetCode: LeetCode is a popular platform for preparing for coding interviews. It’s especially useful for those focused on Python, Java, or C++ . They offer a large collection of problems tailored to these languages and various skill levels.
  • HackerRank: HackerRank provides coding challenges and competitions for multiple languages, such as Python, Java, C++, and JavaScript . In addition to general algorithms and data structure problems, they offer language-specific tracks that’ll help you improve your expertise in your desired language.
  • Exercism: Exercism is an excellent resource if you’re interested in learning and practicing 50+ programming languages . Their platform focuses on mentorship, with experienced developers providing feedback and guidance on your submitted solutions.
  • Project Euler: If you’re more interested in solving complex mathematical problems using code, Project Euler is the perfect choice. While they don’t strictly focus on a single language, it’s an excellent platform for honing your skills in languages like Python or Haskell .

Here’s an overview of these platforms’ strengths:

To choose the best platform for your needs, consider the following factors:

  • Your target language: It’s essential to select a platform offering challenges and resources for the specific programming language you want to master.
  • Skill level: Ensure the platform offers challenges that cater to both beginners and advanced coders to help you progress with your learning.
  • Engagement: Look for platforms with an active community, as they provide better opportunities for networking, feedback, and learning from fellow developers.

Discovering language-specific platforms is a fantastic way to refine your coding skills in your chosen programming language and enhance your knowledge. By exploring the recommended platforms, you’ll be well on your way to mastering your desired language and tackling coding challenges with ease.

Improve Your Skills with Daily Challenges

Taking part in daily coding challenges is an excellent way to sharpen your programming skills. These websites not only provide a wide variety of problems to solve, but also allow you to learn from others’ solutions and improve your coding abilities at the same time.

CodeSignal offers a daily featured coding challenge along with a leaderboard to track your progress. You can participate in these challenges to improve your computational skills and learn new algorithms.

Daily Coding Problem delivers a new coding challenge straight to your inbox every day . You can sign up for a free account and start getting those challenges. Completing a daily problem can help you consistently develop and hone your coding proficiency.

Participating in these challenges offers a multitude of benefits, such as:

  • Strengthening your problem-solving skills
  • Building consistency in your programming practice
  • Teaching you new algorithms and data structures
  • Engaging you in an active and competitive learning environment.

A quick comparison of these two daily challenge websites is as follows:

Keep in mind, though, there’s no one-size-fits-all approach when it comes to practicing coding challenges. It’s crucial to determine which platform best aligns with your goals and skill level. While CodeSignal provides a more social experience with the added benefit of leaderboards and company-specific tests, Daily Coding Problem adopts a more individual and focused approach, with access to official solutions when subscribed.

Give these daily coding challenge websites a try, and you’ll likely see an improvement in your problem-solving abilities over time. Not only will this help you become more confident in your technical skills, but it can also provide an advantage during your next coding interview! So, don’t hesitate to dive into daily coding challenges to strengthen your skills and become a better programmer.

Collaborative Websites for Real-World Scenarios

Collaborative websites play a vital role in helping you develop the necessary skills to tackle real-world coding challenges. They offer a unique, interactive experience by allowing developers to work together on projects, learn from one another, and get exposed to different programming perspectives. Here’s a rundown of some top platforms in this category:

GitHub is a popular version control and collaboration platform. You’ll find countless open source projects to contribute to, spanning various programming languages and domains. By participating in these projects, you can:

  • Contribute to the community
  • Learn from experienced developers
  • Polish your coding skills
  • Build your portfolio

2. Bitbucket

Bitbucket is similar to GitHub, focusing on team collaboration for code management and deployment. While it’s primarily used for private projects, you can still found public repos to contribute to. Bitbucket is an excellent choice if you’re interested in experiencing real-world projects from a team perspective.

3. LeetCode Team

LeetCode is well-known for its coding challenge platform, but it also offers a Team feature. With LeetCode Team, you can:

  • Collaborate with fellow developers to solve problems as a group
  • Improve your problem-solving abilities
  • Gain new technical insights
  • Engage in friendly coding competitions

GitLab is another code collaboration and version control platform with a robust CI/CD pipeline integration. It offers an end-to-end solution for managing software development projects. By participating in GitLab, you’ll have the opportunity to:

  • Work on a diverse range of projects
  • Coordinate effectively within a team
  • Learn best practices for CI/CD pipelines
  • Advance your software development skills

When looking for the perfect platform to sharpen your skills, consider any or all of these collaborative websites:

Remember that what might work best for one person might not be the ideal choice for you. It’s essential to experiment with these platforms to discover which resonates with your learning style and aligns with the real-world coding scenarios you’re interested in tackling. So go ahead and dive into these collaborative websites, and you’ll be well on your way to mastering programming challenges in real-life settings!

Polish Your Algorithm Knowledge

One of the best ways to get ahead in the competitive world of programming is by honing your algorithm skills. Numerous coding challenge websites help you achieve this goal in a fun and engaging way. So, let’s dive into how you can polish your algorithm knowledge effectively.

Practice regularly – Consistency is key when it comes to improving any skill. Make it a habit to dedicate some time each day or week to solving coding challenges. With regular practice, you’ll soon find yourself getting better at identifying patterns and designing efficient solutions.

Start with the basics – It’s essential to have a strong foundation in basic algorithms and data structures. Begin by familiarizing yourself with commonly used techniques, such as:

  • Sorting algorithms (e.g., bubble sort, quick sort)
  • Searching algorithms (e.g., binary search)
  • Dynamic programming
  • Graph algorithms
  • String manipulation

Once you’re comfortable with these core concepts, you can confidently tackle more advanced challenges.

Learn from others – Don’t be shy to study others’ solutions after completing a problem. Analyzing different approaches can provide valuable insights and help you identify more efficient ways to tackle similar challenges in the future. Additionally, participating in discussions and asking questions on forums is a great way to further your understanding and learn new techniques.

Challenge yourself – It’s important to steadily increase the difficulty of the problems you tackle. Pushing yourself beyond your comfort zone not only helps you grow as a programmer but also equips you with the ability to handle complex real-world scenarios.

Here are some top coding challenge websites where you can polish your algorithm knowledge:

  • Project Euler

In summary, polishing your algorithm knowledge is an ongoing process that requires consistent practice, starting with the basics, learning from others, and challenging yourself with increasingly difficult problems. By utilizing coding challenge websites effectively, you’re positioning yourself for success in the world of programming.

Ace Your Next Coding Interview

To stand out as a stellar candidate during a coding interview, practicing is key. Numerous websites allow you to take on code challenges that will hone your programming skills and boost your confidence. In this section, we’ll highlight some of the best coding challenge websites to help you excel in your next interview.

LeetCode is a popular platform for interview preparation. With over 1,800 coding questions at varying difficulty levels, it covers multiple topics, including algorithms, databases, and system design. LeetCode also has a great community for coding discussions and boasts a user-friendly interface.

Key features of LeetCode:

  • Over 1,800 coding problems
  • Database, shell, and system design challenges
  • User-friendly interface and community

HackerRank is another essential resource to sharpen your programming skills. It offers a wide range of coding challenges in various domains such as algorithms, data structures, and artificial intelligence. HackerRank provides a personalized dashboard to track your progress, making it an excellent tool for self-improvement.

Why choose HackerRank:

  • Comprehensive set of coding challenges
  • Personalized dashboard to monitor progress
  • Competitions for additional motivation

For those who enjoy learning by competing with others, CodeChef is the perfect platform. CodeChef hosts coding contests, giving you the opportunity to test your skills against programmers from around the world. With an archive of hundreds of problems, specific courses, and a robust coding community, CodeChef is an invaluable resource.

CodeChef offers:

  • Coding contests with cash prizes
  • An extensive problem archive
  • Courses to enhance your skills

Another avenue for your coding interview prep is Codewars . This martial arts themed site lets you gain ranks and earn honor as you progress through coding challenges. With support for multiple programming languages and a system that adapts to your skill level, Codewars is both enjoyable and rewarding.

Top benefits of Codewars:

  • Adaptive difficulty system
  • Multiple language support
  • Engaging, gamified experience

Last on our list, but by no means the least, is Project Euler . Catering to those with a love for mathematics, this site features over 750 challenging math-related coding problems. Project Euler is ideal for programmers who want to tackle intricate problems that will push their analytical abilities.

Why consider Project Euler:

  • Over 750 math-focused coding challenges
  • Ideal for analytical minds
  • Builds problem-solving skills

With these top coding challenge websites in your arsenal, you’re well on your way to acing your next coding interview. Practice diligently and continually improve, and you’ll be one step closer to landing your dream job.

Tackling AI and Machine Learning Challenges

When it comes to coding challenges , seeking out those specific to artificial intelligence (AI) and machine learning (ML) can greatly improve your skills. Numerous websites offer these challenges, granting you the opportunity to learn, practice, and showcase your abilities. Here, we’ll cover a few popular platforms for tackling AI and ML challenges.

Kaggle, owned by Google, is hands down one of the most well-known platforms for AI and ML challenges. With competitions in various fields such as computer vision, natural language processing, and recommender systems, there’s something for everyone. Here’s a glimpse of what Kaggle offers:

  • Competitions: Work your way through challenges, with some even offering cash prizes!
  • Datasets: Access a vast repository of datasets, useful for practicing your ML skills.
  • Notebooks: Share your code and collaborate with peers, fostering growth and innovation.
  • Discussion forums: Engage with a supportive community, tackling problems together.

Another website that caters specifically to AI-related challenges is Coderbyte. Their ML challenges are centered around computer vision and natural language processing, providing ample opportunity for growth. Key features include:

  • Challenges: Solve coding problems and get instant feedback on your solution.
  • Official solutions: Review optimized solutions by Coderbyte staff.
  • Rankings and leaderboards: Compare your progress with other coders.

Codewars may not be exclusively devoted to AI and ML, but it does consist of a collection of kata specifically targeted at these topics. Here, you can practice and refine your AI and machine learning skills through their unique platform. Codewars offers:

  • Challenge-based learning: Complete coding challenges, or kata, to climb the ranks.
  • Various difficulty levels: Suitable for beginners and advanced coders alike.
  • Community-created challenges: Users contribute new kata, providing continuous learning opportunities.

AIcrowd hosts a wide array of competitions encompassing data science, artificial intelligence, and machine learning challenges. Its emphasis on the AI domain ensures that you’ll find plenty of opportunities for honing your skills. Highlights of AIcrowd include:

  • Multiple domains: Choose from an assortment of challenges in several AI-related fields.
  • Collaborative community: Form and join teams to collaborate on competition solutions.
  • Prizes and recognition: Some contests reward participants with accolades or cash prizes.

By investing time in these platforms, you can build your AI and ML skills in a supportive, competitive environment. Don’t hesitate to tackle coding challenges – they’re a crucial component for mastering AI and machine learning concepts.

Stay Competitive with Leaderboards and Rankings

Leaderboards and rankings play a vital role in coding challenge websites, as they keep you motivated and engaged, pushing you to improve your skills. As you participate in challenges and complete tasks, you’ll notice your position on the leaderboard changing, reflecting your progress.

A significant advantage of competition-based learning is that it encourages you to learn and grow at a faster pace. You’ll want to enhance your skills and knowledge to outperform your peers and climb up the leaderboard. This healthy competition motivates you to try harder, think outside the box, and stay committed to your goals.

Rankings on the leaderboard are often determined by factors such as:

  • Points earned from completing challenges
  • Speed of solving problems
  • Accuracy of solutions
  • Number of successful submissions

It’s important to note that the algorithm for calculating leaderboard positions might vary across coding challenge websites, based on their scoring rules and competition types.

In addition to individual rankings, these websites often provide team rankings as well. Collaborating with your peers and showcasing your collective problem-solving abilities enables you to tackle more complex challenges as a team. This teamwork provides opportunities for learning, networking, and even forming lasting friendships in the programming community.

Some of the top coding challenge websites that feature leaderboards and rankings are:

By joining these websites, you’ll gain access to a rich ecosystem of challenges tailored to various programming languages and difficulty levels. You can choose from a wide range of domains, such as:

  • Data structures and algorithms
  • Artificial intelligence and machine learning
  • Web development
  • Mobile development
  • Cybersecurity

Keep an eye on the leaderboards to see how well you’re doing and where you can improve. Analyze the top performers’ code and strategies, and learn from their success.

Remember, perseverance and patience are essential to becoming a better programmer. With every challenge you tackle, you’ll undoubtedly grow stronger and more competitive. So, dive into these coding challenge websites, and unleash your full potential as you rise through the leaderboards and rankings.

Conclusion: Choosing the Ideal Platform for You

Deciding on the perfect coding challenge website can be overwhelming, especially with numerous options out there. Here’s a summary of essential factors to consider when looking for the ideal platform:

  • Difficulty Levels : Choose a site that offers diverse difficulty levels, as they cater to a broader range of skill levels. It’s crucial to find challenges that help you grow, but don’t leave you feeling lost.
  • Learning Material : Some platforms provide learning resources to help you develop your skills before diving into challenges. Consider a site that offers the right mix of tutorials and practice problems.
  • Topic Variety : Look for a platform that covers multiple domains to ensure you stay engaged and motivated. By exploring different fields, you’ll gain valuable knowledge and enhance your overall coding experience.
  • Employment Opportunities : If you’re seeking a job, search for platforms that facilitate networking with employers. Some coding challenge websites even host hiring contests, giving you the chance to land job offers.
  • Active Community : A vibrant online community can make a significant impact on your growth as a programmer. Engage with fellow coders, ask questions, and share your knowledge on a platform that encourages interaction.

Make sure you test different coding challenge websites and pick the one that resonates with you. Each platform offers unique features and varying levels of engagement, so take your time to discover the one that caters to your needs. Ultimately, the ideal platform should empower you to become a more confident and skilled programmer.

Nathan Britten

Nathan Britten, the founder and editor of Developer Pitstop, is a self-taught software engineer with nearly five years of experience in front-end technologies. Nathan created the site to provide simple, straightforward knowledge to those interested in technology, helping them navigate the industry and better understand their day-to-day roles.

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Starting the journey of programming and competitive coding , every coder wants to test himself/herself in the waters. To do so, he/she has to participate in various competitive coding challenges and competitions. But the challenge that every coder faces in the beginning of the journey is which website to go for such coding challenges and competitions, which is the best website for coding competitions, what is the benefit of attending a competitive coding competition, and many more.

Top Websites for Coding Challenges and Competitions

In this article, we have addressed the questions that you face in such situations and curated a list of top 15 websites for coding challenges and competitions. If you are about to begin your coding journey, we recommend you to refer to this article for a complete reference of the opportunities you can take advantage of using the mentioned websites for coding challenges and competitions.

Here are the top 15 coding websites/contests for competitive programming:

1. GeeksForGeeks

GeeksForGeeks organizes a bunch of programming contests every month through the practice portal which includes a number of job-a-thons for freshers to get hiring opportunities in a significant number of companies. Besides, there are many other monthly, weekly and daily basis challenges hosted regularly on the websites such as:

  • Monthly Job-a-thon : It is a contest for individual participants. Participants get the opportunity to get hired by a bunch of companies that shortlist for interviews as per their own criteria.
  • Bi-Wizard Coding : A coding competition exclusively for students. The top 100 students get chances of winning exciting rewards and also access to free courses.
  • Aim GATE : A monthly challenge that is a great opportunity for GATE aspirants to judge their preparations.
  • Interview Series : A weekly challenge that gives a great opportunity for aspirants to practice a lot of questions based on important data structure and algorithms concepts for the preparation of interviews.
  • Problem of the Day : A new problem every day to strengthen the base of data structure and algorithm.

The key features about the contests are as follows:

  • Chances of winning exciting rewards, GeeksForGeeks merchandise .
  • Access to free courses .
  • Chances of getting letter of recommendation from the CEO .

2.  The ACM-ICPC International Collegiate Programming Competitions

The International Collegiate Programming Contest is an algorithmic programming contest for college students. Teams of three, representing their university, work to solve the most real-world problems, fostering collaboration, creativity, innovation, and the ability to perform under pressure. Through training and competition, teams challenge each other to raise the bar on the possibility. Quite simply, it is the oldest, largest, and most prestigious programming contest in the world. Some interesting stats about ACM-ICPC are:

  • It is spread across 80 countries
  • The registration for the contest in India starts generally in August .
  • The regionals in India are held generally in December
  • The winner of the world finals gets an award of $15000 , each continental champion also receives awards. There are also prizes for being the first solver of a problem

Refer to our complete guide on How to prepare for ACM – ICPC to begin your ACM-ICPC journey.

3. Google Kick Start

Google Kick Start is a global online coding competition, consisting of three-hour rounds of a variety of algorithmic challenges designed by Google engineers. Participants can compete in one or all online rounds held throughout the year, and will have the opportunity to develop and grow their programming abilities while getting a glimpse into the technical skills needed for a career at Google. Some important facts about Google Kick Start are:

  • It consists of 8 online coding rounds.
  • The winner gets cash prizes .
  • Top participants may be invited to interview at Google .

Refer to our complete guide on How to prepare for Google Kick Start to begin your Google Kick Start journey.

4. Google Code Jam

Google Code Jam is Google’s prestigious coding competition, a global battleground that urges all programmers to showcase their coding skills. A thrilling opportunity for all code-lovers, Google Coding Jam is a one-of-a-kind platform where programmers are pitted against each other and against time by putting their coding skills to the test. The champion gets the coveted Google Code Jam winning title and cash prize of $15,000 !

The Google Coding Jam comprises several rounds and a Code Jam World final. Each round brings with it challenging algorithmic problems; contestants have to pass each of these preliminary rounds, and finally, a total of 25 coding wizards reach the end game to fight for the cherished champion’s title.

You can also see and try previous year’s problems from our Google Code Jam archive page.

5. Google Hash Code

Hash Code is a team programming competition, organized by Google, for students and professionals around the world. You pick your team and programming language and we pick an engineering problem for you to solve. This year’s contest kicks off with a Qualification Round, where your team can compete virtually from wherever you’d like, alongside your virtual Hub. Top teams will then be invited to compete in our virtual World Finals. Some facts about Google Hash Code are:

  • Registration generally starts in February .
  • Winners get cash prize of $4000 .

You can also see and try previous year’s problems from their Google Hash Code archive page.

6. The ICFP Programming Competitions

The International Conference on Functional Programming (ICFP) has been held annually since 1998. It is a challenging three-day open programming competition for which there is no entry fee. The enthusiast can participate from any location without any size limit for team formation. The team will be given 72 hours to complete and submit their entry through the internet. The aim of this competition is to showcase the programming languages and tools that the participants admire the most. This is one of the top programming competitions to apply for.  The ICFP for 2022 will be from 11th to 16th September .

7. Facebook Hacker Cup

Hacker Cup is Facebook’s annual open programming competition which is open across the world for participants. This is one of the top programming competitions to apply for. These coding competitions focus on problem-solving and algorithmic coding skills to advance through every year’s online rounds, and after making it to the global finals they will be earning the grand prize. Some facts about Facebook Hacker Cup:

  • It consists of 4 online rounds which include Qualification round, round 1, round 2, round 3 and one onsite final round .
  • All of the 25 finalists get cash prizes .

Refer to our complete guide on How to prepare for Facebook Hacker Cup to begin your Facebook Hacker Cup journey.

8. Microsoft Imagine Cup

Microsoft Imagine Cup is held annually. The program invites participants to take on real-world problems that are submitted by NGOs, IGOs , and nonprofit organizations that can then take on as part of the Imagine Cup project. The main idea behind conducting such coding competitions and programming competitions is to code with a purpose that can help create new solutions. Some important facts about Microsoft Imagine Cup:

  • You must be at least 16 years old and actively registered as a student .
  • Students participate in a team of maximum 4 persons .
  • There are cash prizes and other benefits like training and mentorship from experts for global finalists.
  • There are also three regional finals.

9. Codeforces Coding Competitions

Codeforces is a website that hosts competitive programming competitions. It is one of the most popular websites for its exciting features. This is one of the top programming competitions to apply for. The polygon feature for creating and testing problems and social networking through internal public blogs. The participants are divided into ranks based on their ratings.

The best thing about Codeforces is that the contests are regularly conducted here as every month they organize nearly 6 contests. Also, participation in the contests is free and open to everybody.

 Codeforces offers various types of coding challenges and features such as:

  • Short format Contests with a duration of 2 hours .
  • Educational Contests of 2-2.5 hours duration are conducted 2-4 times in a month.
  • You can challenge or hack other contestants’ solutions as well.
  • You can also solve problems from previous contests for learning objectives.

Refer to our complete guide on Best Tips to Get Started with Codeforces to begin your Codeforces journey.

10. Codechef Coding Competitions

CodeChef organizes programming competitions at the start of every month and conducts two smaller programming contests at the middle and end of the month. It also offers various algorithm tutorials and forum discussions to help your journey in computer programming more easily.

There are four types of contest Codechef host:

  • The Starters
  • The Long Challenge
  • The Cook-Off
  • The LunchTime

Refer to our complete guide on How to become a 4 star coder on Codechef in only 3 contests to help you kickstart your Codechef journey.

11. Topcoder Coding Competitions

Topcoder is a crowdsourcing company with a global community of developers, designers, data scientists, and competitive programmers . These coding competitions are conducted twice a year and are held both online and offline. The participants take challenges from across the world from all the leading brands such as Google, IBM, and eBay . They also conduct individual matches online every week that can help participants gain experience and do well in the competition.

12. Atcoder Coding Competitions

AtCoder is a programming contest website based in Japan. From this weekend, we will provide problem statements in both English and Japanese and AtCoder will be an international programming competition! There are three types of official contests in AtCoder:

  • AtCoder Grand Contest (AGC) . This is our best contest. The problems will have high originality and require interesting observations.
  • AtCoder Regular Contest (ARC) . The problems may be a bit typical compared to AGC problems, but still, we think most of you can enjoy them and they are good for practice.
  • AtCoder Beginner Contest (ABC ). This is mainly targeted at those who are new to competitive programming. The problems will be easy and educational.

13. HackerEarth

HackerEarth is an Indian software company headquartered in San Francisco, US, that provides enterprise software that helps organizations with their technical hiring needs. HackerEarth is used by organizations for technical skill assessment and remote video interviewing. All challenges organized by HackerEarth are listed on the Challenges Page. These challenges can be divided into the following categories. Monthly Programming Contests: Currently they have 3 monthly contests based on difficulty level. 1st of every month from 21:30 IST (16:00 UTC) to Midnight for a duration of 2 hours & 30 minutes. The website offers thoughtful challenges mostly good for experienced programmers. They host monthly coding challenges and hackathons. Their challenge Code Monk is quite popular among programmers. ThoughtWorks , Amazon , Accenture , Walmart Labs , IBM , and Intuit are some leading companies of HackerEarth.

14. HackerRank

HackerRank is a competitive coding platform where it allows you to practice various coding problems and participate in many challenges. It provides various hackathons, and coding challenges and some companies conduct their hiring test here. The platform also gives you badges by solving challenges on the HackerRank website, and these badges will be added to your profile. This is one of the top programming competitions to apply for.

15. Leetcode

Leetcode is one of the largest tech communities with more than millions of active users. It offers various weekly and biweekly programming competitions for the participants. This also helps in job interview preparation; discussions are also provided on LeetCode. It hosts contests for 90 minutes where you can solve the challenges in their online editor, aka, playground in any one of the supported programming languages.

Conclusion:

Though the above mentioned coding websites are very common, there are other websites as well that are widely used by other users worldwide for coding practice and challenges, such as:

  • Khan Academy
  • and many others.

Related Posts:

  • Stuck in Programming: Get The Solution From These 10 Best Websites
  • 10 Best Coding Games to Advance Your Programming Skills  

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More From Forbes

Programming: the new life skill.

Forbes Technology Council

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Cofounder/CTO at Vymo . Alum Columbia University & BITS, Pilani.

For the longest time, we’ve heard and accepted the left-brain-right-brain theory. Most of us believe that we are inclined one way and that our career choices result from this. But increasingly, neuroscientists are finding that this notion is inaccurate. The human brain doesn’t favor one side to the other.

While the brain does use each half of the brain for specific activities—we can no longer assume that mathematicians are left-brained, and opera singers are right.

Take computer programming, for example. It requires logic, analytical and problem-solving capabilities—typically a left-brained stronghold. But I believe, irrespective of what old research says and what new research tells us, anyone can code and everyone should.

Here’s why.

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Ios 17 4 release date awesome iphone update just days away, putin critic alexei navalny has died russian prison service says, technology and software are pervasive.

We compare insurance plans online, rely on school WhatsApp groups for communication, and reconfirm the steps of a recipe by checking a YouTube video. Every action we take today has technology intertwined with that process. The smallest businesses in the towns and villages in India have a QR code facilitating a UPI transaction! The coconut seller may not know anything other than his vernacular language—but she definitely knows how to transact on the phone. Increasingly, it has become imperative to be digitally literate.

While it may be enough to use an app, spending time understanding how it was built can deepen one’s understanding.

Programming Teaches You Problem-Solving

Programming as a subject requires us to break down a challenge into smaller, solvable parts and then tackle each part to develop a viable solution. Writing algorithms, reasoning out steps and building toward a logical conclusion, identifying patterns, debugging the piece of code you have written, and finally, abstraction are invaluable lessons someone can learn and use effectively in other scenarios!

It Also Encourages Creativity

Is this the best way to solve a problem? Can your steps to concluding become shorter? Take another approach. During my time with the Google mobile team, we were building consumer technology that moved from being reactive ( waiting for the user to ask for information ) to proactive ( what the user needs ). This technological shift required a lot of creative thinking in the background—what kind of data do we need to understand what a user wants, and how do you combine data effectively to gather interesting insights into a customer? You start wearing a creative hat without even realizing it!

Programming Builds Resilience

Leading psychologists say that teaching problem-solving skills is one of the most important cornerstones to building resilience. Other things to learn include building a growth mindset and learning to manage failure. Coders know that trial and error is part of their job. You need to persist through challenges, errors, continuous debugging and adapting your approach. This encourages a growth mindset and builds a certain tenacity that helps individuals view challenges as a stepping stone.

Programming Is Accessible Now—Especially For Kids

The internet has opened up so many avenues for learning programming. Several websites help you learn coding skills. Especially for children—there is a tremendous opportunity to learn and benefit from programming. Close to 50 million children across 200-plus countries and territories use MIT’s Scratch to create projects! Code.org provides some very interesting projects to children based on their favorite animation characters to help them learn code.

And the uptake seems promising—start ’em young, it looks like!

Why Should You And I Care?

As technology leaders, we play a significant role in promoting a culture of code-enablement among children and youth. A few ways I think we can enable this include:

1. Mentor school-going children and high school graduates—give them an overview of coding, expose them to learning resources, guide them to work on small projects.

2. Support not-for-profit institutions that work toward education and volunteer as faculty and mentors.

3. Partner with educational institutions and organize hackathons, coding meets, etc. for children and provide sponsorship, fee discounts and other rewards.

4. Maybe encourage employee children and families to learn coding basics and provide stipends to cover this.

These are ways in which we could be involved in helping future generations pick up computer science skills. Do write to me if you are working toward this in some way and would like to share your ideas.

As the world moves into generative AI and its applications, technology will only advance faster—and it becomes very important to stay tuned. Learn the language! While the World Economic Forum lists computer science skills as essential for employability in its Future of Jobs report , it is beyond that. As a Brookings study quotes, programming is among a broad suite of skills youngsters need to thrive in work, life and citizenship.

Forbes Technology Council is an invitation-only community for world-class CIOs, CTOs and technology executives. Do I qualify?

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There are hundreds of programming languages. Which are the most in demand for 2024?

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Like spoken languages, there are hundreds of programming languages out there. Some are used by millions each day—others have fallen in popularity while others wait in the wings for their time to shine.

Earlier this century, PHP was one of the most widely known programming languages. But today, faster and more efficient languages have overtaken it. 

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Among professional developers today, JavaScript is generally considered the most popular. The language has topped Stack Overflow’s Developer Survey as the most widely used for close to a decade. The most recent rendition found that 65.82% of professional developers used the programming language—with HTML/CSS, SQL, Python, and TypeScript rounding out the top five.

Data from GitHub is similar. JavaScript, Python, TypeScript, Java, and C# were the most used on its platform in 2023. 

But with rapidly technological advances, the half-life of skills—meaning the time it takes for half the knowledge to be useless—is decreasing, creating an increased need for upskilling. Luckily, there are a number of ways to gain these skills—whether from an advanced degree, bootcamp, or certification program. But, determining which programming language path to go down can be tricky.

What programming languages are the most in-demand?

Based on the usage data, many programming languages are in demand and popular, including JavaScript, Python, TypeScript, HTML/CSS, Java, C#, and more

But that’s not to say they will be tomorrow. The coding languages that experienced the most growth in 2023, according to GitHub’s research , included:

“Both Rust and Lua are notable for their memory safety and efficiency—and both can be used for systems and embedded systems programming, which can be attributed to their growth,” the report states.

Stack Overflow’s research finds that HTML/CSS, JavaScript, and Python are the leading languages among individuals “learning to code.”

Python is the programming language with the biggest demand, in the opinion of Thai Le, an associate professor of computer and information science at the University of Mississippi. His area of expertise includes the study of machine learning and natural language processing.

“Python is quite intuitive, and I think it’s easier to learn,” Le says. “And then if you use Python, you can do a lot of things not only—traditional computer science stuff, but also you can do a lot of data science projects using Python as well.”

Many top tech companies, such as Meta and Google, use Python to develop machine learning and AI platforms, he notes.

Go , a programming language designed by Google, is also growing in popularity and importance, says Li, because of its ability to help create swift and accurate learning models.

Which programming language is best?

Again, like spoken languages, picking a programming language to learn should be based on your interests and career aspirations. If you are looking to become a web developer , HTML, CSS, and JavaScript will be important. If becoming a data scientist or data analyst is more enticing, then Python, SQL, and R are key. Software developers may use C#, C++, or Java more often. Others in the tech arena may use Ruby, Kotlin, or Shell.

In the world of programming, there is not a one-size-fits-all answer as to the best or most important language. However, having the basic knowledge in some of the easier-to-learn programming languages like Java, Python, or Scratch may help build a foundation.

As AI becomes smarter and easier to use, computer programming is likely to look much different in the coming years—with the technology helping to automate processes, detect problems, and even propose solutions. And while AI isn’t likely to completely replace programmers any time soon, increased attention will be placed on more complicated tasks—thus emphasizing the need to master in-demand languages.

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Our next-generation model: Gemini 1.5

Feb 15, 2024

The model delivers dramatically enhanced performance, with a breakthrough in long-context understanding across modalities.

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A note from Google and Alphabet CEO Sundar Pichai:

Last week, we rolled out our most capable model, Gemini 1.0 Ultra, and took a significant step forward in making Google products more helpful, starting with Gemini Advanced . Today, developers and Cloud customers can begin building with 1.0 Ultra too — with our Gemini API in AI Studio and in Vertex AI .

Our teams continue pushing the frontiers of our latest models with safety at the core. They are making rapid progress. In fact, we’re ready to introduce the next generation: Gemini 1.5. It shows dramatic improvements across a number of dimensions and 1.5 Pro achieves comparable quality to 1.0 Ultra, while using less compute.

This new generation also delivers a breakthrough in long-context understanding. We’ve been able to significantly increase the amount of information our models can process — running up to 1 million tokens consistently, achieving the longest context window of any large-scale foundation model yet.

Longer context windows show us the promise of what is possible. They will enable entirely new capabilities and help developers build much more useful models and applications. We’re excited to offer a limited preview of this experimental feature to developers and enterprise customers. Demis shares more on capabilities, safety and availability below.

Introducing Gemini 1.5

By Demis Hassabis, CEO of Google DeepMind, on behalf of the Gemini team

This is an exciting time for AI. New advances in the field have the potential to make AI more helpful for billions of people over the coming years. Since introducing Gemini 1.0 , we’ve been testing, refining and enhancing its capabilities.

Today, we’re announcing our next-generation model: Gemini 1.5.

Gemini 1.5 delivers dramatically enhanced performance. It represents a step change in our approach, building upon research and engineering innovations across nearly every part of our foundation model development and infrastructure. This includes making Gemini 1.5 more efficient to train and serve, with a new Mixture-of-Experts (MoE) architecture.

The first Gemini 1.5 model we’re releasing for early testing is Gemini 1.5 Pro. It’s a mid-size multimodal model, optimized for scaling across a wide-range of tasks, and performs at a similar level to 1.0 Ultra , our largest model to date. It also introduces a breakthrough experimental feature in long-context understanding.

Gemini 1.5 Pro comes with a standard 128,000 token context window. But starting today, a limited group of developers and enterprise customers can try it with a context window of up to 1 million tokens via AI Studio and Vertex AI in private preview.

As we roll out the full 1 million token context window, we’re actively working on optimizations to improve latency, reduce computational requirements and enhance the user experience. We’re excited for people to try this breakthrough capability, and we share more details on future availability below.

These continued advances in our next-generation models will open up new possibilities for people, developers and enterprises to create, discover and build using AI.

Context lengths of leading foundation models

Highly efficient architecture

Gemini 1.5 is built upon our leading research on Transformer and MoE architecture. While a traditional Transformer functions as one large neural network, MoE models are divided into smaller "expert” neural networks.

Depending on the type of input given, MoE models learn to selectively activate only the most relevant expert pathways in its neural network. This specialization massively enhances the model’s efficiency. Google has been an early adopter and pioneer of the MoE technique for deep learning through research such as Sparsely-Gated MoE , GShard-Transformer , Switch-Transformer, M4 and more.

Our latest innovations in model architecture allow Gemini 1.5 to learn complex tasks more quickly and maintain quality, while being more efficient to train and serve. These efficiencies are helping our teams iterate, train and deliver more advanced versions of Gemini faster than ever before, and we’re working on further optimizations.

Greater context, more helpful capabilities

An AI model’s “context window” is made up of tokens, which are the building blocks used for processing information. Tokens can be entire parts or subsections of words, images, videos, audio or code. The bigger a model’s context window, the more information it can take in and process in a given prompt — making its output more consistent, relevant and useful.

Through a series of machine learning innovations, we’ve increased 1.5 Pro’s context window capacity far beyond the original 32,000 tokens for Gemini 1.0. We can now run up to 1 million tokens in production.

This means 1.5 Pro can process vast amounts of information in one go — including 1 hour of video, 11 hours of audio, codebases with over 30,000 lines of code or over 700,000 words. In our research, we’ve also successfully tested up to 10 million tokens.

Complex reasoning about vast amounts of information

1.5 Pro can seamlessly analyze, classify and summarize large amounts of content within a given prompt. For example, when given the 402-page transcripts from Apollo 11’s mission to the moon, it can reason about conversations, events and details found across the document.

Reasoning across a 402-page transcript: Gemini 1.5 Pro Demo

Gemini 1.5 Pro can understand, reason about and identify curious details in the 402-page transcripts from Apollo 11’s mission to the moon.

Better understanding and reasoning across modalities

1.5 Pro can perform highly-sophisticated understanding and reasoning tasks for different modalities, including video. For instance, when given a 44-minute silent Buster Keaton movie , the model can accurately analyze various plot points and events, and even reason about small details in the movie that could easily be missed.

Multimodal prompting with a 44-minute movie: Gemini 1.5 Pro Demo

Gemini 1.5 Pro can identify a scene in a 44-minute silent Buster Keaton movie when given a simple line drawing as reference material for a real-life object.

Relevant problem-solving with longer blocks of code

1.5 Pro can perform more relevant problem-solving tasks across longer blocks of code. When given a prompt with more than 100,000 lines of code, it can better reason across examples, suggest helpful modifications and give explanations about how different parts of the code works.

Problem solving across 100,633 lines of code | Gemini 1.5 Pro Demo

Gemini 1.5 Pro can reason across 100,000 lines of code giving helpful solutions, modifications and explanations.

Enhanced performance

When tested on a comprehensive panel of text, code, image, audio and video evaluations, 1.5 Pro outperforms 1.0 Pro on 87% of the benchmarks used for developing our large language models (LLMs). And when compared to 1.0 Ultra on the same benchmarks, it performs at a broadly similar level.

Gemini 1.5 Pro maintains high levels of performance even as its context window increases. In the Needle In A Haystack (NIAH) evaluation, where a small piece of text containing a particular fact or statement is purposely placed within a long block of text, 1.5 Pro found the embedded text 99% of the time, in blocks of data as long as 1 million tokens.

Gemini 1.5 Pro also shows impressive “in-context learning” skills, meaning that it can learn a new skill from information given in a long prompt, without needing additional fine-tuning. We tested this skill on the Machine Translation from One Book (MTOB) benchmark, which shows how well the model learns from information it’s never seen before. When given a grammar manual for Kalamang , a language with fewer than 200 speakers worldwide, the model learns to translate English to Kalamang at a similar level to a person learning from the same content.

As 1.5 Pro’s long context window is the first of its kind among large-scale models, we’re continuously developing new evaluations and benchmarks for testing its novel capabilities.

For more details, see our Gemini 1.5 Pro technical report .

Extensive ethics and safety testing

In line with our AI Principles and robust safety policies, we’re ensuring our models undergo extensive ethics and safety tests. We then integrate these research learnings into our governance processes and model development and evaluations to continuously improve our AI systems.

Since introducing 1.0 Ultra in December, our teams have continued refining the model, making it safer for a wider release. We’ve also conducted novel research on safety risks and developed red-teaming techniques to test for a range of potential harms.

In advance of releasing 1.5 Pro, we've taken the same approach to responsible deployment as we did for our Gemini 1.0 models, conducting extensive evaluations across areas including content safety and representational harms, and will continue to expand this testing. Beyond this, we’re developing further tests that account for the novel long-context capabilities of 1.5 Pro.

Build and experiment with Gemini models

We’re committed to bringing each new generation of Gemini models to billions of people, developers and enterprises around the world responsibly.

Starting today, we’re offering a limited preview of 1.5 Pro to developers and enterprise customers via AI Studio and Vertex AI . Read more about this on our Google for Developers blog and Google Cloud blog .

We’ll introduce 1.5 Pro with a standard 128,000 token context window when the model is ready for a wider release. Coming soon, we plan to introduce pricing tiers that start at the standard 128,000 context window and scale up to 1 million tokens, as we improve the model.

Early testers can try the 1 million token context window at no cost during the testing period, though they should expect longer latency times with this experimental feature. Significant improvements in speed are also on the horizon.

Developers interested in testing 1.5 Pro can sign up now in AI Studio, while enterprise customers can reach out to their Vertex AI account team.

Learn more about Gemini’s capabilities and see how it works .

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Jacquelyn Burt Earns 2024 John Tate Award for Excellence in Undergraduate Advising

Department of Computer Science & Engineering Undergraduate Academic Advisor Jacquelyn Burt was awarded the 2024 John Tate Award for Excellence in Undergraduate Advising. Named in honor of John Tate, Professor of Physics and first Dean of University College (1930-41), the Tate Awards serve to recognize and reward high-quality academic advising, calling attention to the contribution academic advising makes to helping students formulate and achieve intellectual, career, and personal goals.

“I thought it was a trick when I got the email that I was being nominated,” said Jacquelyn. “Within the advising field, this award is a big deal; I described it to my parents as ‘the advising Grammys’. Part of what makes it so cool is the nomination process, which involves several letters of support from students and colleagues as well as putting together a kind of portfolio of some of the programs and resources I’ve helped develop. So many different people contributed to that on my behalf, so it was really powerful to be reminded of the impact of my work and the amazing colleagues and students I get to love!”

Jacquelyn is a lifelong Gopher, earning her B.S. in business marketing education in 2014 and her M.Ed. in education policy and leadership in 2019. She joined the CS&E student services team in 2019, where she quickly developed a reputation as a staunch ally and advocate for her students. In 2021, Jacquelyn received the Gopher Spirit Award , recognizing the U of M advisor who contributes to a positive office culture, is inclusive, and brings others up. “I feel the most useful when a student or colleague is misunderstanding something, or experiencing a lot of stress, and I am able to help separate it into smaller pieces or come up with a different way of looking at it,” said Jacquelyn. “If I can shine light on something, help shift a lens or perspective, or give an idea or experience a bit of breathing room, I’m doing my job.”

When asked about what inspired her to work in advising, Jacquelyn replied, “When I first came to the University of Minnesota as a freshman, I was a family and social sciences major - I love relationships and helping, and so figured a career in marriage and family therapy sounded good. However, I’ve also always loved education and felt most at home at school - when I finished my undergraduate degree, I didn’t want to leave college because I loved it so much! Student advising seemed like a cool sweet spot between classroom teaching, advocacy, and being in a helping role. Ultimately, I’ve really come to see advising as facilitation work: I help students identify and navigate barriers to their goals, experiences, and personal development.”

As an undergraduate advisor, Jacquelyn manages a caseload of over 450 students in multiple majors, minors and other departmental programs. On top of her advising duties, Jacquelyn has undertaken a number of projects to better the undergraduate student experience, including establishing a weekly newsletter; designing, promoting, and executing departmental events and programs; and developing and teaching students through a variety of training and credit-bearing coursework. Most notably, Jacquelyn created and now facilitates mandatory implicit bias training for all 200+ undergraduate teaching assistants, as well as teaching CSCI 2915: Teaching Methods in Computer Science (a leadership and communication skills seminar) each semester.

“Within our student services team, we’ve developed a great culture of initiative and problem-solving: like, if you identify a problem and have or can create tools to help address it, amazing - you go get it!” said Jacquelyn. “We all believe that students deserve to have positive and supportive experiences while they are here, and we’ve built an advising team that trusts each of us to help bear that belief out. I definitely could not do my job without the collaboration, encouragement, and love of the whole team.”

On top of her work within CS&E, Jacquelyn has personally designed advising resources that have made an impact for undergraduate students across the entire university. Her “Explore & Expand” tool (originally developed for the college’s major/minor expo) is used widely throughout the entire University, particularly within the Center for Academic Planning and Exploration office. Additionally, her “Academic Progress Audit System Guide” resource (originally used within the departmental “Welcome to the Major” workshops) has been used in advisor training and onboarding. Above all, Jacquelyn has a keen eye for making connections, and for communicating things that can be overwhelmingly complex with both clarity and compassion.

“When I applied for this job, I had to come up with an ‘advising philosophy,’” said Jacquelyn. “What I landed on is anytime a student leaves an interaction with me, I want them to feel a little bit more seen, supported, and celebrated. I am a naturally celebratory person, which I’ve learned to embrace - and this award is a wonderful way to celebrate the work of advising!”

Learn more about the John Tate Award at the Provost website . 

Jacquelyn Burt headshot

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MarketBeat

7 growth stocks that will prove growth is back in 2024

Posted: February 15, 2024 | Last updated: February 15, 2024

<p><span>If you've been investing for any length of time, you've probably heard a lot of time-honored investment maxims. Things like "time in the market beats timing the market." One that I like to keep in mind is to "skate where the puck is moving."</span> </p> <p><span>There's a reason for that. Investors frequently believe they need special knowledge to be successful at investing. Let's be clear: you do have to put in the work. But the information you need to be a successful investor is not unknowable, even without a background in finance or accounting. </span> </p> <p><span>However, investors can choose from thousands of stocks, ETFs, and mutual funds. And that's just equities. There are also bonds, precious metals, real estate, and – for those so inclined – cryptocurrency to consider. It's impossible to stay on top of every emerging story. </span> </p> <p><span>Sometimes you need a little nudge. </span> </p> <p><span>This special presentation focuses on growth stocks that may be flying under investor's radars. Some of these stocks are already growing – and have room to grow some more. Others haven't participated in the rally but have strong growth potential in 2024 and beyond.</span> </p> <br> <br>

If you've been investing for any length of time, you've probably heard a lot of time-honored investment maxims. Things like "time in the market beats timing the market." One that I like to keep in mind is to "skate where the puck is moving."  

There's a reason for that. Investors frequently believe they need special knowledge to be successful at investing. Let's be clear: you do have to put in the work. But the information you need to be a successful investor is not unknowable, even without a background in finance or accounting.  

However, investors can choose from thousands of stocks, ETFs, and mutual funds. And that's just equities. There are also bonds, precious metals, real estate, and – for those so inclined – cryptocurrency to consider. It's impossible to stay on top of every emerging story.  

Sometimes you need a little nudge.  

This special presentation focuses on growth stocks that may be flying under investor's radars. Some of these stocks are already growing – and have room to grow some more. Others haven't participated in the rally but have strong growth potential in 2024 and beyond.  

<p>The first company on this list is from the fintech sector. But <a href="https://www.marketbeat.com/stocks/NYSE/NU/"><strong>Nu Holdings Ltd. (NYSE: NU)</strong></a> may not be well-known to investors. That's because it's not a U.S. company. However, Nu is the largest fintech bank in North America.  </p> <p>The digital-first bank was founded in 2013 as a way to disrupt the Latin American banking system, which is dominated by a small number of large banks. Among other things, this trapped customers in an ecosystem of high fees for limited services. </p> <p>The company has already signed up five million customers and has a total addressable market that can potentially bring in millions more. Revenue is growing year-over-year, and the bank is solidly profitable. Nu Holdings is also projecting earnings growth of 75% in the next 12 months.  </p> <p>The concern is how much of that growth is priced into a stock up 97% in the last 12 months. The <a href="https://www.marketbeat.com/stocks/NYSE/NU/price-target/">Nu Holdings analyst ratings on MarketBeat</a> show that analysts are beginning to bid NU stock higher, with <a href="https://www.marketbeat.com/stocks/NYSE/UBS/"><strong>UBS Group AG (NYSE: UBS)</strong></a> reiterating its Buy rating with a price target of $11.50.  </p>

#1 - Nu Holdings (NYSE:NU)

The first company on this list is from the fintech sector. But Nu Holdings Ltd. (NYSE: NU) may not be well-known to investors. That's because it's not a U.S. company. However, Nu is the largest fintech bank in North America.  

The digital-first bank was founded in 2013 as a way to disrupt the Latin American banking system, which is dominated by a small number of large banks. Among other things, this trapped customers in an ecosystem of high fees for limited services. 

The company has already signed up five million customers and has a total addressable market that can potentially bring in millions more. Revenue is growing year-over-year, and the bank is solidly profitable. Nu Holdings is also projecting earnings growth of 75% in the next 12 months.  

The concern is how much of that growth is priced into a stock up 97% in the last 12 months. The Nu Holdings analyst ratings on MarketBeat show that analysts are beginning to bid NU stock higher, with UBS Group AG (NYSE: UBS) reiterating its Buy rating with a price target of $11.50.  

<p>Artificial intelligence is driving a super cycle in the chip sector. <a href="https://www.marketbeat.com/stocks/NASDAQ/QUIK/"><strong>QuickLogic Corporation (NASDAQ: QUIK)</strong></a> is a fabless chipmaker. That means the company designs and markets semiconductors and owns its intellectual property. But since it's a fabless company, it doesn't fabricate (i.e., fab) them.  </p> <p>QuickLogic has seen a sharp spike in revenue largely fueled by unprecedented demand for chips to handle AI applications. In its most recent quarter, the company posted positive earnings. And the company is projecting a full year of positive earnings.  </p> <p>QUIK stock up 116% in the last 12 months. So, it's logical to wonder if it can move any higher. And the company is not widely covered by analysts. However, here's something to consider. QuickLogic is mainly known for designing chips for industrial and defense applications. That niche is likely to grow due to demand from aerospace and defense contractors. The company also has a history of beating analysts' expectations.  </p>

#2 - QuickLogic (NASDAQ:QUIK)

Artificial intelligence is driving a super cycle in the chip sector. QuickLogic Corporation (NASDAQ: QUIK) is a fabless chipmaker. That means the company designs and markets semiconductors and owns its intellectual property. But since it's a fabless company, it doesn't fabricate (i.e., fab) them.  

QuickLogic has seen a sharp spike in revenue largely fueled by unprecedented demand for chips to handle AI applications. In its most recent quarter, the company posted positive earnings. And the company is projecting a full year of positive earnings.  

QUIK stock up 116% in the last 12 months. So, it's logical to wonder if it can move any higher. And the company is not widely covered by analysts. However, here's something to consider. QuickLogic is mainly known for designing chips for industrial and defense applications. That niche is likely to grow due to demand from aerospace and defense contractors. The company also has a history of beating analysts' expectations.  

<p>Chinese stocks took a beating in 2023. <a href="https://www.marketbeat.com/stocks/NASDAQ/LI/"><strong>Li Auto Inc. (NASDAQ: LI)</strong></a> was a notable exception. The stock is up 18% in the last 12 months despite being down 25% in the last three months. Li Auto is the leading manufacturer of electric vehicles (EVs) within the People's Republic of China.  </p> <p>However, this appears to be a case of a rose getting buried among the thorns. A lack of demand in the United States has beaten down the EV sector. The same can't be said of China. In the company's third quarter 2023 earnings report, Li Auto reported a <a href="https://www.marketbeat.com/originals/li-auto-smashes-estimates-proving-evs-can-be-profitable/">271% year-over-year increase in revenue</a>. And the bottom line grew at a similar year-over-year pace.  </p> <p>Elon Musk has already sounded the alarm about the <a href="https://www.axios.com/2024/02/14/chinese-ev-electric-vehicles-sold-america">potential dominance of Chinese EV makers</a>. In fact, Li Auto outsold <a href="https://www.marketbeat.com/stocks/NASDAQ/TSLA/"><strong>Tesla Inc. (NASDAQ: TSLA)</strong></a> in October 2023 and now leads China in EV sales.  </p> <p>The <a href="https://www.marketbeat.com/stocks/NASDAQ/LI/price-target/">Li Auto analyst ratings on MarketBeat</a> project a stock price gain of 164% in that same time. That's likely due to the company's expectation that it will increase earnings by more than 83.5% in the next 12 months. </p>

#3 - Li Auto (NASDAQ:LI)

Chinese stocks took a beating in 2023. Li Auto Inc. (NASDAQ: LI) was a notable exception. The stock is up 18% in the last 12 months despite being down 25% in the last three months. Li Auto is the leading manufacturer of electric vehicles (EVs) within the People's Republic of China.  

However, this appears to be a case of a rose getting buried among the thorns. A lack of demand in the United States has beaten down the EV sector. The same can't be said of China. In the company's third quarter 2023 earnings report, Li Auto reported a 271% year-over-year increase in revenue . And the bottom line grew at a similar year-over-year pace.  

Elon Musk has already sounded the alarm about the potential dominance of Chinese EV makers . In fact, Li Auto outsold Tesla Inc. (NASDAQ: TSLA) in October 2023 and now leads China in EV sales.  

The Li Auto analyst ratings on MarketBeat project a stock price gain of 164% in that same time. That's likely due to the company's expectation that it will increase earnings by more than 83.5% in the next 12 months. 

<p>No matter how you feel about <a href="https://www.marketbeat.com/cryptocurrencies/bitcoin/"><strong>Bitcoin (BTC)</strong></a> as an asset class, you must acknowledge that it's been one of the best-performing assets in 2024. <a href="https://www.marketbeat.com/stocks/NASDAQ/RIOT/"><strong>Riot Platforms Inc. (NASDAQ: RIOT)</strong></a> gives you a way to invest in a blockchain future without owning the digital currency.  </p> <p>Here's why. Bitcoin is "mined" via specialized, high-speed computers that compete to solve complex cryptographic problems. Riot operates one of the largest blockchain mining networks in the world. As a result, it has the lowest mining costs, which means it's a very efficient company. That's not the case with many Bitcoin miners. </p> <p>The company's low mining costs will stand out as the next Bitcoin halving occurs in April 2024. This means miners' profits will be cut in half (as Bitcoin nears its maximum supply of 21 million). This will benefit efficient operators like Riot even as RIOT stock is up 161% in the last 12 months.  </p>

#4 - Riot Platforms (NASDAQ:RIOT)

No matter how you feel about Bitcoin (BTC) as an asset class, you must acknowledge that it's been one of the best-performing assets in 2024. Riot Platforms Inc. (NASDAQ: RIOT) gives you a way to invest in a blockchain future without owning the digital currency.  

Here's why. Bitcoin is "mined" via specialized, high-speed computers that compete to solve complex cryptographic problems. Riot operates one of the largest blockchain mining networks in the world. As a result, it has the lowest mining costs, which means it's a very efficient company. That's not the case with many Bitcoin miners. 

The company's low mining costs will stand out as the next Bitcoin halving occurs in April 2024. This means miners' profits will be cut in half (as Bitcoin nears its maximum supply of 21 million). This will benefit efficient operators like Riot even as RIOT stock is up 161% in the last 12 months.  

stock chart graphic

#5 - Enphase Energy (NASDAQ:ENPH)

Solar stocks zigged when they were supposed to zag last year. And if you were an investor in Enphase Energy Inc. (NASDAQ: ENPH) , you know how painful it's been. ENPH stock is down 39.5% in the last 12 months, and that's after a 41% increase in the stock price in the last three months.  

The issue was the company's guidance, which became prescient in its most recent quarter as revenue and earnings fell sharply year-over-year. However, the maker of solar-focused semiconductor-based home energy solutions continues to have a strong long-term story as the United States continues its transition to renewable energy.  

Enphase is forecasting 87% earnings growth in the next 12 months. A reason to believe in that forecast is that the company has the highest margins in the industry. Lower interest rates could also be a potential catalyst. And the E nphase Energy analyst ratings on MarketBeat show a 16% upside for ENPH stock.  

<p>Lithium stocks were expected to be attractive investments in 2023. But as supply outpaced demand on declining EV demand, many of these investments dragged down portfolios. <a href="https://www.marketbeat.com/stocks/NYSE/SQM/"><strong>Sociedad Quimica y Minera de Chile (NYSE: SQM)</strong></a> was no different. SQM stock is down over 55% in the last 12 months.  </p> <p>The Chilean-based company has a diversified portfolio, but about 75% of its revenue comes from lithium. That could hold the stock price down as lithium prices are expected to be down through at least the first half of 2024. </p> <p>However, the opportunity for the company comes in its brine asset, the Salar de Atacama, which has the highest lithium concentration in the world. The company is also taking steps to secure more lithium production in Australia and China. </p> <p>As the lithium supply-demand dynamic flips in its favor, SQM stock is an attractive long-term investment, trading at just 5.4x forward earnings.  </p>

#6 - Sociedad Quimica y Minera de Chile (NYSE:SQM)

Lithium stocks were expected to be attractive investments in 2023. But as supply outpaced demand on declining EV demand, many of these investments dragged down portfolios. Sociedad Quimica y Minera de Chile (NYSE: SQM) was no different. SQM stock is down over 55% in the last 12 months.  

The Chilean-based company has a diversified portfolio, but about 75% of its revenue comes from lithium. That could hold the stock price down as lithium prices are expected to be down through at least the first half of 2024. 

However, the opportunity for the company comes in its brine asset, the Salar de Atacama, which has the highest lithium concentration in the world. The company is also taking steps to secure more lithium production in Australia and China. 

As the lithium supply-demand dynamic flips in its favor, SQM stock is an attractive long-term investment, trading at just 5.4x forward earnings.  

<p><a href="https://www.marketbeat.com/stocks/NYSE/HD/"><strong>Home Depot (NYSE: HD)</strong></a> is one part of a virtual duopoly with <a href="https://www.marketbeat.com/stocks/NYSE/LOW/"><strong>Lowe's Companies Inc. (NYSE: LOW)</strong></a> in the United States. HD stock presents an anomaly for investors. The stock is up 11% in the last 12 months, even though revenue and earnings have fallen year-over-year.  </p> <p>But a closer look at the HD chart shows that much of the growth has come in the last three months. That might suggest that investors are becoming bullish on interest rate cuts that could boost the housing market.  </p> <p>However, with the amount and timing of those rate cuts in question, Home Depot still appears to be a buy because the company has successfully integrated e-commerce and omnichannel services into its business model. That's important because home improvement is a niche market that even <a href="https://www.marketbeat.com/stocks/NASDAQ/AMZN/"><strong>Amazon.com Inc. (NASDAQ: AMZN)</strong></a> has been unable to successfully crack. </p> <p>The <a href="https://www.marketbeat.com/stocks/NYSE/HD/price-target/">Home Depot analyst ratings on MarketBeat</a> show that analysts are moving their price targets for the stock higher, and Home Depot offers a <a href="https://www.marketbeat.com/stocks/NYSE/HD/dividend/">solid dividend</a> that has increased for the last 14 years, has a 2.33% yield and an annual payout of $8.36 per share.   </p>

#7 - Home Depot (NYSE:HD)

Home Depot (NYSE: HD) is one part of a virtual duopoly with Lowe's Companies Inc. (NYSE: LOW) in the United States. HD stock presents an anomaly for investors. The stock is up 11% in the last 12 months, even though revenue and earnings have fallen year-over-year.  

But a closer look at the HD chart shows that much of the growth has come in the last three months. That might suggest that investors are becoming bullish on interest rate cuts that could boost the housing market.  

However, with the amount and timing of those rate cuts in question, Home Depot still appears to be a buy because the company has successfully integrated e-commerce and omnichannel services into its business model. That's important because home improvement is a niche market that even Amazon.com Inc. (NASDAQ: AMZN) has been unable to successfully crack. 

The Home Depot analyst ratings on MarketBeat show that analysts are moving their price targets for the stock higher, and Home Depot offers a solid dividend that has increased for the last 14 years, has a 2.33% yield and an annual payout of $8.36 per share.   

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    HackerRank offers you to solve these programming challenges in any of various programming languages such as C, Java, Python, Ruby, etc. Apart from this, participants can solve the problems in various computer science domains like algorithms, machine learning, and artificial intelligence.

  10. Coding Games and Programming Challenges to Code Better

    CodinGame is a challenge-based training platform for programmers where you can play with the hottest programming topics. Solve games, code AI bots, learn from your peers, have fun.

  11. Exercism

    Develop fluency in 67 programming languages with our unique blend of learning, practice and mentoring. Exercism is fun, effective and 100% free, forever. ... Who owns the zebra? Can you solve the Zebra Puzzle with code? +70 more. Write code locally, in your own space. Exercism is primarily built as a CLI-first tool. Download and submit ...

  12. The Best Coding Challenges Websites To Practice Problem Solving

    Exercism. Arguably, Exercism is one of the best coding challenges websites for beginners. The main reason is that they provide a mentor for you. That is, each time you submit a challenge, a mentor checks it for you, and it approves it or suggests changes. Only when they approve your solution you can move forward to the next one.

  13. Brilliant

    TrustScore 4.6 1,628 reviews Master concepts in 15 minutes a day Whether you're a complete beginner or ready to dive into machine learning and beyond, Brilliant makes it easy to level up fast with fun, bite-sized lessons. Effective, hands-on learning Visual, interactive lessons make concepts feel intuitive — so even complex ideas just click.

  14. Solve Python

    Join over 16 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews.

  15. 10,000+ Coding Practice Challenges // Edabit

    How Edabit Works. This is an introduction to how challenges on Edabit work. In the Code tab above you'll see a starter function that looks like this: function hello () { } All you have to do is type return "hello edabit.com" between the curly braces { } and then click the Check button. If you did this correctly, the button will turn red and ...

  16. Best Coding Challenge Websites: Level Up Your Skills Today

    Coding challenge websites offer countless opportunities to test your abilities, improve your problem-solving skills, and grow as a developer. As someone who's used these sites for years, I can personally attest to the role these websites play in enhancing programming skills and opening doors to better career prospects.

  17. 23 Best Websites to Learn and Improve Coding Online (2023 ...

    Educative.io This website contains thousands of tutorials and courses covering all aspects of computer technologies, like programming, cloud computing, and AI. The Educative.io team argues that although video tutorials have become the norm lately, we read faster than we hear, and written tutorials are beneficial for learning technical material.

  18. Top 15 Websites for Coding Challenges and Competitions

    1. GeeksForGeeks GeeksForGeeks organizes a bunch of programming contests every month through the practice portal which includes a number of job-a-thons for freshers to get hiring opportunities in a significant number of companies. Besides, there are many other monthly, weekly and daily basis challenges hosted regularly on the websites such as:

  19. Solve C++

    Join over 16 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. We use cookies to ensure you have the best browsing experience on our website. Please read our cookie policy for more information about how we use cookies. Ok.

  20. Solve C

    Join over 16 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. ... Solve Challenge. Playing With Characters. Easy C (Basic) Max Score: 5 Success Rate: 84.20%. Solve Challenge. Sum and Difference of Two Numbers.

  21. 10 Puzzle Websites to Sharpen Your Programming Skills

    1. Programming Praxis Programming Praxis is a blog that includes a range of interesting problems with solutions usually available in several different programming languages. 2. CodeKata CodeKata is a blog of programming puzzles written by Dave Thomas, who's most famous for the groundbreaking book, Pragmatic Programmer.

  22. Programming: The New Life Skill

    Programming Teaches You Problem-Solving Programming as a subject requires us to break down a challenge into smaller, solvable parts and then tackle each part to develop a viable solution.

  23. Eager to learn computer programming? These are some of the ...

    The most recent rendition found that 65.82% of professional developers used the programming language—with HTML/CSS, SQL, Python, and TypeScript rounding out the top five.

  24. Introducing Gemini 1.5, Google's next-generation AI model

    Relevant problem-solving with longer blocks of code. 1.5 Pro can perform more relevant problem-solving tasks across longer blocks of code. When given a prompt with more than 100,000 lines of code, it can better reason across examples, suggest helpful modifications and give explanations about how different parts of the code works.

  25. Jacquelyn Burt Earns 2024 John Tate Award for Excellence in

    Department of Computer Science & Engineering Undergraduate Academic Advisor Jacquelyn Burt was awarded the 2024 John Tate Award for Excellence in Undergraduate Advising. Named in honor of John Tate, Professor of Physics and first Dean of University College (1930-41), the Tate Awards serve to recognize and reward high-quality academic advising, calling attention to the contribution academic ...

  26. 7 growth stocks that will prove growth is back in 2024

    Bitcoin is "mined" via specialized, high-speed computers that compete to solve complex cryptographic problems. Riot operates one of the largest blockchain mining networks in the world.