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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.
oh, I see, thank you
This comment is hidden because it contains spoiler information about the solution
This comment is hidden because it contains spoiler information about the solution
Correct me if I'm wrong, but arrays are passed in by reference, right? So many of these solutions will actually alter the arrays passed in, such as by calling sort() on the array. I know the question doesn't specify that the function shouldn't alter the array, but it seems to me that it shouldn't.