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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.
Creating a solution without a for loop seems like bad practice even if it is clever or effecient. In fact I didn't think that was possible until checking your solution which is admittedly good
Here, fixed that for you.
having n++ in the for loop slows the solution down a lot