回答編集履歴
1
別解
answer
CHANGED
@@ -6,4 +6,6 @@
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6
6
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correctを使う手もあります(反則?)
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7
7
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8
8
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s=gets.chomp
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9
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-
s.chars.permutation.to_a.flatten.join.split(%r[(#{"."*s.size})]).reject{|s| s==""}
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9
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+
s.chars.permutation.to_a.flatten.join.split(%r[(#{"."*s.size})]).reject{|s| s==""}
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10
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+
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11
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+
gets.chomp.chars.permutation.inject([]){|ary,perm| ary << perm.join}
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