[코테 풀이] Maximum Odd Binary Number

Q_2864) Maximum Odd Binary Number

출처 : https://leetcode.com/problems/maximum-odd-binary-number/

class Solution {
    public String maximumOddBinaryNumber(String s) {
        String answer = "";
        int ones = count(s, '1');
        int zeros = count(s, '0');
        for (int i = 0; i < ones - 1; i++) answer += '1';
        for (int j = 0; j < zeros; j++) answer += '0';
        if(ones>=1) answer += '1';
        return answer;
    }
    
     public int count(String s, char target) {
        int count = 0;
        for (int i = 0; i < s.length(); i++) {
            if (s.charAt(i) == target) {
                count++;
            }
        }
        return count;
    }
}