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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.
I can't say I blame the kata for specifying the task. If you'd rather reverse engineer examples, pick another kata?
Seems like an interesting kata but with no examples I'm spending more time trying to decipher the math than coming up with a coding solution.