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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.
Wow this is an old one. Updated with your suggestions.
You are right. Thanks for that. Resubmitted a minor change where I made the min check at start use gcd instead, which catches that case.
Recursive for Fibonacci is really slow for any large n.