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- Java
- JavaScript
- Python
- Ruby
- Haskell
- C#
- Crystal
- Elixir
- PHP
- TypeScript
- R (Beta)
- NASM
- Julia (Beta)
- Kotlin
- Go
- Scala
- C++
- C
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- Rust
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- Prolog (Beta)
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- F#
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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.