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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.
There is nothing stated in description that describes the actual task. Only the test cases make it somewhat clear, which isn't ideal at all.
while told in the description, punctuation is never tested.
Haskell : https://www.codewars.com/kumite/5bbf715f9b84f493c3000249?sel=5bbf715f9b84f493c3000249