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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.
I'm in love with this kata's description.
I found it very creative and helpful, but with a thorough and kind description like this, it would be great to have more diverse tests cases to pass so it becomes a bit more complex and challenging.
No random tests.
Also, modifying the input argument as the example solution does is not a best practice.