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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.
Because there are no sample tests, you should write your own.
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This was the first thing I tried, but I kept getting errors. It worked fine in VSCode on my computer, but would not work on here.
I second this. I don't understand what the question is. There isn't enough information.