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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.
0 is neither a positive nor negative integer and according to this -->
You are given an array with positive numbers, such solutions make perfect sense in the context of this kata, hence not an issue! (I'll reject the fork in the meantime)