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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.
From the description: "given an array of minimum 4 integers"
I disagree. If you look at the initial string "(( @" there is a space. The space is supposed to be counted as a '(' in your final results. All I know is that trying to account for spaces breaks everything else I have for this kata in JS.