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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.
Hi,
Unfortunately, that's a duplicate: https://www.codewars.com/kata/5680e56f4797a55076000044
Morover, no random tests.
You should unpublish it.
Cheers
Edit: 'just forgot... If you're interested in authoring kata, you should read the whole documentation about it: https://docs.codewars.com/authoring/guidelines/kata
No random tests.