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August 29, 2020 17:14
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| (1..1000000).reduce { |a, e| a = "#{a * e}".sub(/\d*?(\d{0,9})0*$/, '\1').to_i } |
実行すると584125440を返すんだけど謎
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久しぶりに見に来たけどこのgistやっぱり何ｗｗｗ