Created
November 25, 2020 23:29
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I had a dream about this and had to make it
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| class Integer | |
| @@memo = {0 => 1} | |
| def factorial | |
| return @@memo[self] if @@memo.include? self | |
| value = self * (self - 1).factorial | |
| @@memo[self] = value | |
| value | |
| end | |
| end |
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