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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.
It's better now, but you have a typo, focus on the test it's failing now and you'll find it.
No, your code fails the first sample test. And if tested with that input value in VSCode it'll fail there too. Why are you using a loop?