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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.
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Why has this been voted as best practice?
O(NlogN) insted of linear, for no reason...
Ambiguous and misleading problem statement, bad pre-built code. Worst one I have come across on this site by far.