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- JavaScript
- PHP
- Ruby
- Python
- TypeScript
- C
- Rust
- Prolog (Beta)
- Go
- Java
- NASM
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- Julia (Beta)
- Crystal
- CoffeeScript
- Perl (Beta)
- C++
- R (Beta)
- Dart
- COBOL (Beta)
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- Haskell
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- RISC-V (Beta)
- Scala
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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.