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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.
Your description still has single spaces in the example output
EXAMPLE : beetleJuice("Harry!") => "Harry! Harry! Harry!"
The instructions ask for one space between names but the test case requires two.