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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.
Try console.log(numbers) in a loop
Ya, that makes sense, no point having two variables with the exact same value. Thanks for the tip!
You can use j instead of n to add to arr[i - 1] or make j loop between arr[i - 1] and arr[i] and just push j.