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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.
absolutely
I'm intrigued by this one, it's been biting at me for a while. I would probably have to get rid of the recursion to avoid a timeout.
I think it took me a week.
Ok. But you can always skip the Python version and see how others have solved it.
Missing your point here. The python ref solution runs 660ms. Yours?
Take some more time and implement a relatively efficient algorithm.
Those values are, what your function returns and what the expected result is. What's the input value?