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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.
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Probably, should be labled with "PERFORMANCE", as the time of execution is important (considering number of random tests).
Expected: '[-0, -618, -1236, 1854, -2472, 3090, 3708, -4326, 4944, -5562, 6180, 6798, -7416, -8034, 8652, 9270, -9888, 10506, 11124, 11742, -12360, 12978, 13596]', instead got: '[0, -618, -1236, 1854, -2472, 3090, 3708, -4326, 4944, -5562, 6180, 6798, -7416, -8034, 8652, 9270, -9888, 10506, 11124, 11742, -12360, 12978, 13596]'
Realy '-0' for multiplication result is correct? What did I missed?