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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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if there is more than two numbers it would fail, but the description for that Kata says "All numbers are equal except for one."
your solution fails with an array like this