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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.
sortsorts the array in-place and does not return anything. So, you would have to store the array in a variable before applyingsort, and finally remember to return the sorted array.This comment is hidden because it contains spoiler information about the solution
aren't these two iterations as well, as array_count_values iterates?
also, doesnt str_split also iterate?
maybe i'm wrong
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