回答編集履歴
1
後置ifで書き直す
test
CHANGED
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@@ -12,11 +12,7 @@
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12
12
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13
13
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b.length.downto(0) do |n|
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14
14
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15
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-
if a.end_with?(b[0, n])
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16
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-
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17
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-
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15
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+
break a + b[n, b.length - n] if a.end_with?(b[0, n])
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18
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-
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-
end
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16
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end
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18
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