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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.
Any idea why my solution keeps timing out? I timed it on my laptop and it took no time at all to complete while codewars keeps giving me an over 7000ms time out.