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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 is the fastest running function I could come up with.
this is very fast and efficient in my benchmark. I love it!
This comment is hidden because it contains spoiler information about the solution
Some might say this isn't the most elegant to look at, but in my benchmark I found this solution to be the fastest by far. More than twice as fast as the closest competitor.