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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.
Voted as a best practice. I solved this Kata using RegExp, but in my opinion, this solution is more perfomance. Performance was one of the requirements for the solution, as I understand it