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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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says i mutated the input list even tho when i do print(numbers) right before returning the copied list it shows me the list not mutated
omg i forgot there was a sum function ree xD
I died so much 😂😂