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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.
Are you offering to memoize the function randomly for different values of
nandphoping that this will help somehow?If you have to use so much factorials, have you tried memoization? The cleanest solutions take a look at the math first though.