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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.
yeah I agree. It took me so much time to solve the problem and optimize the solution until 'WTF' when I saw the top voted solution hahaha.. Anyway worth it coz I learn so much and I feel I'm still okay with my solution as it really functions so well even the rules change to what it really meant.