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by phaemon
2116 days ago
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Well, it can't hit zero because you'd need equal numbers for that, and they're not coprime ;) It can't be negative because you cheat and always put "larger - smaller". See your own example: you go: 13 - 7 = 6 -> 7 - 6 = 1
a - b = c -> b - c = d
But then then you do: 6 - 1 = 5 -> 5 - 1 = 4
a - b = c -> c - b = d
Which switches the order. What if you don't? |
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