【LeetCode】Add Binary

来源：互联网发布：数据新闻的发展编辑：程序博客网时间：2024/06/14 18:13

题目描述：

Given two binary strings, return their sum (also a binary string).

For example,
a = "11"
b = "1"
Return "100".

跟前面十进制相加差不多。逐位相加就是了。

class Solution {public:string addBinary(string a, string b) {string ret;int inc(0);int LEN = max(a.length(), b.length());for (int i = 0; i <LEN; i++){if (a.length() > i)inc += a[a.length() - i - 1] - '0';if (b.length() > i)inc += b[b.length() - i - 1] - '0';ret = (char)(inc % 2 + '0') + ret;inc >>= 1;}if (inc)ret = '1' + ret;return ret;}};

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