回答編集履歴
2
test
CHANGED
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@@ -1,4 +1,13 @@
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1
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+
最初にリストから敗者を削除して、勝者の次の位置に敗者を挿入するという方法が考えられます。
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1
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-
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2
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+
```ruby
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3
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+
players = [1, 2, 3, 4, 5]
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2
4
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5
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ARGF.each do |line|
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6
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winner, loser = line.split.map(&:to_i)
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7
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players.delete(loser)
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8
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players.insert(players.index(winner)+1, loser)
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9
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end
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3
10
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11
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print(players)
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12
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```
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4
13
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1
test
CHANGED
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@@ -1,14 +1,4 @@
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1
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-
勝者と敗者の位置(index)を入れ替える、という方法が考えられます。
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2
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-
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1
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+
※ 間違いのため削除
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3
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players = [1, 2, 3, 4, 5]
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4
2
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5
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ARGF.each do |line|
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6
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winner, loser = line.split.map(&:to_i)
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7
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idx_winner = players.index(winner)
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8
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idx_loser = players.index(loser)
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9
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players.insert(idx_winner+1, players.delete_at(idx_loser))
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10
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players.compact!
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11
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end
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12
3
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13
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-
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4
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+
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14
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-
```
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