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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.
it's just arabic "right to left" unicode symbol that causes other characters to turn around
You should not mutate the input array.
The tests compare the returned array with the input. It's definitely an issue but if you sort in place than it should pass.
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