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Bitwise Addition
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| function add(a, b) { | |
| if(b == 0) return a; | |
| return add(a ^ b, (a & b) << 1); | |
| } | |
| add(4, 5) // 9 | |
| function subtract(a, b) { | |
| return (add(a, add(~b, 1))); | |
| } | |
| subtract(9, 2) // 7 |
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