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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.
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I think it's too long , try to use regex .
but if the array have a different kind of number, what i had to return?
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I see it , thank you for your help . newW become bigger with the loop .
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