class Solution {
public:
string maximumOddBinaryNumber(string s) {
int len = s.length();
int num0 = 0, num1 = 0;
for (int i = 0; i < len; i) {
if (s[i] == ‘1’) num1;
if (s[i] == ‘0’) num0;
}
string res;
for (int i = 0; i < num1 - 1; i) {
res += “1”;
}
for (int i = 0; i < num0; i++) {
res += “0”;
}
res += “1”;
return res;
}
};