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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
I've created a Haskell translation. I'd appreciate if somebody could review it. It probably needs some work espescially for the tests. Because Text.Regex.TDFA in Haskell seems to be slower and use more memory than other languages, I had to limit the tests to only be up to n=16.