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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.
You didn't write a O(log n) solution.
thank you for pointing this out
How the hell do you write an O(log n) algorithm for a function with n integer inputs...