When comparing Topcoder vs Codewars, the Slant community recommends Codewars for most people. In the question“What are the best coding challenge sites?” Codewars is ranked 3rd while Topcoder is ranked 8th. The most important reason people chose Codewars is:
Algorithms, OOP, functional programming, you name it - there's a challenge class for it and in just about every language.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Problems faced will force users to practice their algorithm skills
Division 1 upper levels in Topcoder has problems which forces users to think about which is the correct algorithm to use to solve them. A lot of problems will also force developers to use multiple data structures and algorithms to find the solution.
Pro Great community
There are a lot of top programmers who hang around the Topcoder forums answering questions or giving their insight and their way of solving to different problems.
Pro Challenges cover all areas of programming
Algorithms, OOP, functional programming, you name it - there's a challenge class for it and in just about every language.
Pro Submit your own challenges
If you think you have a good idea for a challenge that could be added to the dojo then go add it and get feedback.
Pro Multi-language support
Users can complete code challenges in over 12 different languages.
Pro Learning gamification
Get points and increase your level by completing coding challenges.
Pro Free
Codewars is completely free to use.
Cons
Con Require some coding knowledge
You require some coding knowledge to get an account with code wars. The topics are limited