回答編集履歴
2
なぜか空白区切りになっていた
answer
CHANGED
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@@ -2,5 +2,5 @@
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2
2
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```java
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3
3
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String result = Arrays.stream(ar)
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4
4
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.mapToObj(Integer::toString)
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5
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-
.collect(Collectors.joining("
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5
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+
.collect(Collectors.joining(","));
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6
6
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```
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1
修正
answer
CHANGED
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@@ -1,7 +1,6 @@
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1
1
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Streamを使って。
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2
2
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```java
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3
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-
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3
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+
String result = Arrays.stream(ar)
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4
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-
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5
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-
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4
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+
.mapToObj(Integer::toString)
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6
5
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.collect(Collectors.joining(" "));
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7
6
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```
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