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- JavaScript
- Python
- R (Beta)
- Clojure
- C
- Crystal
- Ruby
- Java
- NASM
- C++
- Fortran (Beta)
- Rust
- CoffeeScript
- COBOL (Beta)
- C#
- OCaml (Beta)
- Scala
- PHP
- D (Beta)
- Go
- Haskell
- TypeScript
- Kotlin
- Dart
- Lua
- Julia (Beta)
- Prolog (Beta)
- Groovy
- PureScript (Beta)
- Elixir
- Factor (Beta)
- F#
- BF (Beta)
- Nim (Beta)
- Erlang (Beta)
- CommonLisp (Beta)
- λ Calculus (Beta)
- RISC-V (Beta)
- Pascal (Beta)
- Perl (Beta)
- SQL
Start training on this collection. Each time you skip or complete a kata you will be taken to the next kata in the series. Once you cycle through the items in the collection you will revert back to your normal training routine.