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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.
Yep, came to post the same thing.
I thinks fabs() function is better for this example, because usually abs(int) in Standard C
You don't need to check
== 1because1is alreadytrue.quite simple