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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.
This function accepts three parameters instead of one array. You might want to use the rest parameters syntax to accept an array as function parameters.
If it really was logically incorrect, this kata wouldn't have been approved.
400 people have solved this. It's supposed to be tricky, you need to think outside the box.