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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 is slower (in regards to time complexity) in some specific cases, compared to solution where we compare each element to the saved value and then return instanly when the mismatch is found. In this solution you always have to loop through the whole array at least once.