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- Java
- JavaScript
- Python
- C#
- PHP
- R (Beta)
- TypeScript
- Ruby
- Crystal
- Scala
- Kotlin
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- C++
- NASM
- Rust
- C
- Racket
- Julia (Beta)
- Go
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- D (Beta)
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- 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.