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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.
RandomPerformance tests seem to just one test repeated multiple times.This comment is hidden because it contains spoiler information about the solution
Reference solution sometimes returns wrong values:
No random tests.
Solution with O(n) complexity passes the test: https://www.codewars.com/kata/reviews/606390cd27e5f60001d6c3cb/groups/60639140ecd2bc00014c6eb3