[JAVA] 이진 변환 반복하기

class Solution {
    public int[] solution(String s) {
        int[] answer=new int[2];
        
        while(!s.equals("1")){
            answer[0]++;
            int cnt=0;
            for(int i=0;i<s.length();i++){
                char d = s.charAt(i);
                if(d=='0'){
                    answer[1]++;
                }else
                    cnt++;
            }
            String str="";
            for(int i=cnt; i>0; i/=2){
                str= String.valueOf(i % 2)+str;
            }
            s=str;
        }    
        return answer;
    }
}

출처: https://school.programmers.co.kr/learn/courses/30/lessons/70129