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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.
it generates a leading zero if the value is below 10
at least one other human who also wrote a generator 😌
i thought there must be a fancy brainf... RegExp one liner solution :D