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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.
But you can understand the s.repeat(n) too. You just don't know what is happening in the background.
Yhh cause everybody from beginner to experience coders can understand.