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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.
Exactly, what I said. :D
Do you have any idea how much 4000! is?
This is not efficient enough! The instruction said: n < 4000!
He clearly created a function wich created the object. That is why it's extra funny.