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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 a duplicate of https://www.codewars.com/kata/55905b7597175ffc1a00005a
Sorry, you must add random tests before publishing a kata, it's a mandatory requirement.
It should be
start
>end
, obviously.