回答編集履歴
1
追記
answer
CHANGED
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@@ -2,4 +2,14 @@
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2
2
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a,b,c,d = [[]]*4
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3
3
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4
4
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p a,b,c,d
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5
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+
```
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6
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+
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7
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---
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8
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+
**コメントを受けて追記**
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9
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+
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10
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```ruby
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11
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a,b,c,d = Array.new(4){[]}
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12
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p a,b,c,d
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13
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a << 1
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14
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p a,b,c,d
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5
15
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```
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