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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.
This one makes my head hurt.
please, how did you come about the indexes?
omg, I also thought about dp but came up with simpler solution.
Nice one btw