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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.
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The
numbersarray will have varying lengths; it will not just have a length of three. Your code will fail because it only reads the first three numbers in the array, but you have to square every number and sum this calculation up.