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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.
What is elegant about the solution in your opinion?
Fix what? Your solution? That's not our job, but yours.
If
ais empty, then so should be the result. Why are you returning something else?Because you need to return a cube higher than 1.