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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.
what do you mean?
As we can see in the tests, the 1st one should equal 0, but this solution always returns 1. In my opinion, the correct solution shouldn't contain sorting.