回答編集履歴
1
脱字
test
CHANGED
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@@ -30,7 +30,7 @@
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30
30
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31
31
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```
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32
32
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33
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-
ruby x.rb
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33
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+
$ ruby x.rb
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34
34
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35
35
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[[5, 6, 7], [7, 8, 9], [9, 10, 11], [10, 11, 12]]
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36
36
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