Created
December 16, 2019 09:21
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| function add(a, b) { | |
| let c = 0; | |
| let n = a.length > b.length ? a : b | |
| let m = n === a ? b.padStart(a.length, 0) : a.padStart(b.length, 0) | |
| let r = [] | |
| for(let i = n.length - 1;i >= 0; i--){ | |
| let s = c > 0 ? c-- : 0; | |
| s += +n[i] + +m[i] | |
| if (s > 9) c++ | |
| r.unshift((s%10)+"") | |
| } | |
| if (c > 0) | |
| r.unshift(c) | |
| return r.join('') | |
| } |
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Add arbitrary length string integers. Naive memory bound solution