【LeetCode每日一题】2864. 最大二进制奇数-五.代码实现

class Solution {
public:
    string maximumOddBinaryNumber(string s) {
        int one = 0,zero = 0;
        for(string::iterator it = s.begin(); it!=s.end(); it++)
        {
            if(*it=='0') zero++;
            else one++;
        }
        one--;
        string ans;
        while(one--)
        {
            ans.push_back('1');
        }
        while(zero--)
        {
            ans.push_back('0');
        }
        ans.push_back('1');
        return ans;
    }
};