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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.
i did essentially this same solution thinking that it would be faster than using
list.count(). with a list of 1M items where only the 100th and -100th item matched this solution took 19ms where the "clever/best practice" solution takes on average 31.7ms.This comment is hidden because it contains spoiler information about the solution