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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.
But it is an effective solution and have a constant time, when the traditional method has a linear time. So it is better, though the comprehensibility isn't good without comments, but perfomance is actually better
It is actually quite straightforward, if you know geometric sequence and logarithm base change formulas.
This shouldn't be considered "Best Practices", it's not easy to figure out what does it do.
Very "Clever" though.