回答編集履歴
1
清書版
answer
CHANGED
|
@@ -14,4 +14,18 @@
|
|
|
14
14
|
}
|
|
15
15
|
|
|
16
16
|
System.out.println(b);
|
|
17
|
+
```
|
|
18
|
+
|
|
19
|
+
# 清書版（ステップ数削減ｗ）
|
|
20
|
+
|
|
21
|
+
```
|
|
22
|
+
long a = -30456423424563463L;
|
|
23
|
+
String b = Long.toString(a);
|
|
24
|
+
Pattern p = Pattern.compile("([0-9])([0-9]{3}(,.*)*)$");
|
|
25
|
+
|
|
26
|
+
while (p.matcher(b).find())
|
|
27
|
+
b = p.matcher(b).replaceFirst("$1,$2");
|
|
28
|
+
|
|
29
|
+
System.out.println(b);
|
|
30
|
+
|
|
17
31
|
```
|