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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.
Well, not sure what else might be the problem, so if you want you can post your code if you use a spoiler tag and use proper code markdown. Myself or someone else who has solved the kata can maybe help you.
it's not a kata issue if you can't tell what going on, it's for when the kata is broken, instead you could post as a
question
. my question to you is, are you printing or returning the result?