[Leetcode] [JavaScript] Roman to Integer

Roman to Integer

Given a Roman numeral, convert it to an integer.

Input is guaranteed to being within the range from 1 to 3999.

https://leetcode.com/problems/roman-to-integer/

Roman numerals turn to Arabic numerals.

Sweep forward, if the current number is greater than the previous number, plus this number, and vice versa minus the current number.

1 /**2 * @param {string} s3 * @return {number}4  */5 varRomantoint =function(s) {6     varMap = {};7map["I"] = 1; map["V"] = 5; map["X"] = 10; map["L"] = 50;8map["C"] = 100; map["D"] = 500; map["M"] = 1000;9     varRES, TMP = 0;Ten      for(vari = s.length-1; I >= 0; i--){ One         if(!Res) { Ares =Map[s[i]]; -             Continue; -         } the         if(Map[s[i]] >= map[s[i + 1]]){ -Res + =Map[s[i]]; -}Else{ -Res-=Map[s[i]]; +         } -     } +     returnRes; A};

[Leetcode] [JavaScript] Roman to Integer