Leetcode 67. Add Binary
来源：互联网 发布：谷歌浏览器 for mac 编辑：程序博客网 时间：2024/04/30 02:41
Given two binary strings, return their sum (also a binary string).
For example,
a = “11”
b = “1”
Return “100”.
按照二进制的加法规则进行编程就行了
class Solution {public: string addBinary(string a, string b) { string ret = ""; int carry = 0; for (int i = a.size() - 1, j = b.size() - 1; i >= 0 || j >= 0; i--, j--) { int m = (i >= 0 && a[i] == '1'); int n = (j >= 0 && b[j] == '1'); ret = to_string((m + n + carry) & 0x1) + ret; carry = (m + n + carry) >> 1; } return carry ? '1' + ret : ret; }}; 0 0
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