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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.
I didn't think about the ease of insertion. It is indeed more simple using a string
Damn! you and I followed exactly the same way. i have wrote the exact same for loop and thus excution time ran out but after someday I wrote the following code and it worked.