回答編集履歴

修正

2023/02/02 04:47

投稿

スコア12646

test CHANGED Viewed

@@ -3,7 +3,7 @@
 public class Main {
   public static void main(String[] args) throws Exception {
     String[] a = { "3276207", "2865329", "1291117", "1096829", "978100", "322723"};
-    for(String s : a) System.out.println(s.replaceAll("(?<=\\d)(\\d{3})(?=(\\d{3})*$)", ",$1"));
+    for(String s : a) System.out.println(s.replaceAll("(?<=\\d)(?=(\\d{3})+$)", ","));
   }
 }
 ```