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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.
Solved the problem with ease and the results worked well using the print function. When I returned my solution, it timed out, even though I had the same solution as the most upvoted one.