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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.
Note that all the bad ratings are costing you points. I'd suggest you unpublish this duplicate or find a way to change it so it no longer is. See Wiki - Kata Best Practices - Make Sure Content is New.
No random tests.
Duplicate: https://www.codewars.com/kata/conways-look-and-say-generalized