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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.
thank you! that was the problem not written in description
It should work, since addition is commutative. Maybe you missed something else?
does anyone can explain me why "(curr * curr) + prev" doesn't work? it was my first attempt