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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.
Once i hits the squareroot, if it hasn't found a divisor yet, then the number is prime. It would allow it to run a bit faster, but I agree that I don't see a reason it would run slowly.
Sorry, total noob here, but why does the gcd function loop until it comes to a final answer?
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