問題 https://leetcode.com/problems/roman-to-integer/ 解いた # @param {String} s # @return {Integer} def roman_to_int(s) convert_hash = { "I" => 1, "V" => 5, "X" => 10, "L" => 50, "C" => 100, "D" => 500, "M" => 1000 } result = 0 chars = s.c…