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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.
Please mark your code as having spoiler content next time (I already did), and format it so it's readable :P
I don't see you returning any result in your code. You should return it, not print. Also you can hit 'test' and read the error messages on the left which tell you what's happening.
Pick one. Or rather, prove it.