Solving coding challenges is a wonderful method to enhance your abilities when learning to code. Solving various sorts of challenges and puzzles can help you become a better problem solver, grasp the complexities of a programming language, prepare for job interviews, learn new algorithms, and much more. The following is a list of several popular coding challenge websites, along with a brief summary of what each one has to offer.

Top 10 Websites for Coding Practice

TopCoder

TopCoder is one of the first online platforms for competitive programming. It offers a collection of algorithmic challenges that you can finish directly on the website on your own using their code editor. Their popular Single Round Matches are available a few times every month, when you compete against others to answer problems the fastest and with the greatest score.

TopCoder’s top users are highly competitive programmers who routinely compete in programming competitions. Petr Mitrichev, the top-ranked user, has his own blog called Algorithms Weekly, where he talks about coding competitions, algorithms, math, and other topics.

Coderbyte

Coderbyte offers over 200 coding tasks that you can do straight online in one of ten programming languages (check out this example). The difficulties range from simple (identifying the longest word in a string) to difficult (print the maximum cardinality matching of a graph).

They also provide algorithm lessons, introduction videos, and interview preparation courses. Unlike HackerRank and other similar services, you can read the solutions provided by other users for every challenge in addition to the official solutions submitted by Coderbyte.

Project Euler

Project Euler offers a diverse set of problems in the fields of computer technology and mathematics. Writing a simple software to solve a smart mathematical formula or equation, such as calculating the sum of digits of all numbers before each number in a sequence, is typical of the problems. You cannot code on the website directly, so you need to write a solution on your computer and then submit it on their website.

HackerRank

HackerRank offers challenges in a variety of fields, including Algorithms, Mathematics, SQL, Functional Programming, AI, and others. You may complete all of the tasks online (check out this example). Every challenge has a debate and a scoreboard, and most come with an editorial that explains more about the task and how to approach it to find a solution.

Currently, if you don’t solve the problem, you won’t be able to view other people’s solutions. If you try to check the editorial before completing the problem, you will not get the point for solving the problem. HackerRank also enables users to submit applications and apply for employment by completing company-sponsored coding challenges.

CodeChef

CodeChef is a competitive programming website from India that offers hundreds of challenges. You can write code in their online editor and explore a collection of tasks divided into different categories based on your ability level (check out this example). They have a big programmer community that contributes to the forums, writes tutorials, and competes in CodeChef’s coding competitions.

xercism.io

Exercism is a website that offers 3100+ coding tasks in 52 different programming languages. After deciding on a language to learn, you tackle the coding difficulties immediately on your computer (Exercism provides their own command line interface that you can download from GitHub).

It differs from other challenge websites in that you work with a mentor after finishing each task. The mentor evaluates your answers online and, if necessary, assists you in improving them. Once your answers have been validated and uploaded, you will be able to access new challenges.

Codewars

Codewars has a wide library of code challenges that have been submitted and revised by its community. You can tackle the challenges immediately online in one of numerous languages using their editor. You can see a discussion as well as user solutions for each problem.

LeetCode

LeetCode is a well-known Online Judge that offers a variety of 190+ problems to help you prepare for technical job interviews. You can complete the problems online in one of nine different programming languages. You are not allowed to view other users’ solutions, however statistics for your own solutions, such as how fast your code ran when compared to other users’ code,  are provided.

They also feature a Mock Interview section for job interview preparation, their own coding challenges, and a blog with lots of informative articles to help you better comprehend certain topics.

SPOJ

Sphere Online Judge (SPOJ) is a coding challenge provider that offers over 20,000 code problems. You may submit your code to an online editor. SPOJ also conducts its own contests and includes a forum where people can talk about coding issues. However, unlike some other websites, they do not yet supply any official solutions or articles.

CodinGame

CodinGame differs from the other websites in that, rather than merely completing coding tasks in an editor, you participate in authoring the code for games that you play directly online. A list of current games is available here, and this is a game among the list. The game includes a problem description, test cases, and an editor in which you may create code in one of more than 20 programming languages. Although this website differs from the traditional competitive programming websites listed above, it is nevertheless popular among programmers who like solving problems and competing.

Final words

Programming takes a great deal of patience. Begin competing in various competitive programming contests and gradually enhance your skills. Showcasing your rating on your CV will also help you find a job at a top IT company.