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- Python
- JavaScript
- Ruby
- CoffeeScript
- Java
- Haskell
- C++
- C#
- Crystal
- PHP
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- Rust
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- C
- Go
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- Kotlin
- Julia (Beta)
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- Elixir
- R (Beta)
- Scala
- COBOL (Beta)
- D (Beta)
- SQL
- Lua
- Perl (Beta)
- Swift
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- Racket
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- Dart
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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.