Leetcode-Add Binary

来源：互联网发布：网络代理可信吗编辑：程序博客网时间：2024/06/08 14:57

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

For example,
a = "11"
b = "1"

Return "100".

class Solution{public:string addBinary(string a, string b){string s="";int c=0,apos=a.size()-1,bpos=b.size()-1; //c为进位while(apos>=0||bpos>=0||c==1){c += apos >= 0? a[apos--]-'0':0;c += bpos >= 0? b[bpos--]-'0':0;s=char(c%2+'0')+s;      //考虑c可能等于3的情况，只能进1位c /=2;       //考虑c可能等于3的情况}return s;}};

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