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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.
My goal with this solution was to write the function in an elegant way that could handle any number of linked lists as inputs.
I agree, this shouldn't pass the tests - people without reply are not in the array returned.
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