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- JavaScript
- C#
- Haskell
- Python
- Ruby
- Java
- C++
- C
- Scala
- Julia (Beta)
- R (Beta)
- Kotlin
- PHP
- Dart
- NASM
- TypeScript
- CoffeeScript
- Elixir
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- Racket
- Reason (Beta)
- Go
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- Rust
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- D (Beta)
- Swift
- RISC-V (Beta)
- Groovy
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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.