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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.
it will reduce overall time taken as some test cases have empty lists.the code will end after executing 1st return if list is empty
True, the code would see nothing in the list and then just move on giving an empty string.