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- JavaScript
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- Java
- Ruby
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- Haskell
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- Crystal
- F#
- C
- OCaml (Beta)
- Shell
- Julia (Beta)
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- Go
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- Rust
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- Racket
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- Swift
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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.