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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.
Here you are guaranteed to get the unique numbers only in the array.
this is still wrong
consecutive([1, 3, 3, 5, 7], 3, 3)
mousehole must be located at a convex/concave corner position to be valid