[20251020] PGM / LV2 / 이진 변환 반복하기 / 이인희

LiiNi-coder/202510/20 PGM 이진 변환 반복하기.md

@@ -0,0 +1,31 @@
+```java
+import java.util.*;
+
+class Solution {
+    public int[] solution(String s) {
+        int[] answer = new int[]{0, 0};
+
+        while(!"1".equals(s)){
+            // 1개수 확인
+            int oneCount = 0;
+            for(int i = 0; i<s.length(); i++){
+                if(s.charAt(i) == '1')
+                    oneCount++;
+            }
+            answer[1] += s.length() - oneCount;
+            // 이진수 s에 대입
+            StringBuilder sb = new StringBuilder();
+            while(oneCount>1){
+                sb.append(Integer.toString(oneCount % 2));
+                oneCount /= 2;
+            }
+            sb.append(Integer.toString(oneCount));
+            sb.reverse();
+            s = sb.toString();
+            answer[0]++;
+        }
+
+        return answer;
+    }
+}
+```