Codewars

About Codewars

Codewars organizes programming practice into challenges called kata. Choose a language and a challenge, write a solution and use tests to check its behavior. After solving it, compare community solutions to see how other people approached the same problem. A developer learning a new language can use a familiar problem to practice collections, loops and standard-library functions without setting up a larger project. Pick challenges within reach and read the tests and discussion when a concise solution is hard to follow. Codewars is useful for practice after you already know the basics of a language. The exercises are smaller than production work, so combine them with projects where you have to organize files, read documentation, debug interactions and maintain code over time.