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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.
This solution was actually a part of a course on programming fundamentals, so the instructor avoided using built-in functions as much as possible.
it is better to not use build fucnctions in your solutions
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