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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 confusing kata. There are no provided tests in JS and the provided comment and function header don't match the instructions. The submission tests pass in values that aren't numbers without that having been explained in the instructions. I was able to pass by hardcoding the solution, so there are insufficient random tests.
After fixing these issues, I'm still not sure the concept leaves much interest or originality. There are many other map/sort kata.