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Code Kata / Code Dojo Code Challenge / Code Practice practice programming, practice javascript, practice ruby, practice coffeescript, practice coding For Companies For Educators Log In Sign Up Achieve mastery through challenge Improve your skills by training with others on real code challenges Sign Up To join you must first prove your skills. Choose your language to begin... Clojure CoffeeScript C Coq C++ C# Crystal Dart Elixir F# Go Groovy Haskell Java JavaScript Kotlin Lua NASM PHP Python Racket Ruby Rust Scala Shell SQL Swift TypeScript Additional Languages *These languages are currently in beta. Once you enlist you will have an opportunity to train with them. Sharpen your skills Challenge yourself on kata, created by the community to strengthen different skills. Master your current language of choice, or expand your understanding of a new one. Train on kata Solve the 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. Earn ranks and honor Kata are ranked to approximate difficulty. As you complete higher ranked kata, you progress through the ranks so we can match you with relevant challenges. Gain collaborative wisdom Compare your solution with others after each kata for greater understanding. Discuss the kata, best practices, and innovative techniques with the community. Create your own kata Author kata that focus on your interests and train specific skillsets. Challenge the community with your insight and code understanding. Community love "I swear, @codewars is better than college" Martin Genev @cyberseer "Perfect Execution Codewars" Kevin Granger @Kevin_Granger "I forgot to eat dinner, because I was on @codewars. This is addictive" Raf Szalansky @szalansky "@codewars. Extremely well done and an excellent example of mastery learning" Ahmed Omran @this_ahmed Join Us Brought to you by Accelerate your technical hiring. Instant setup. Intuitive testing. Real results. Learn More © 2020 Codewars About API Blog Privacy Terms Contact Confirm Cancel Confirm...