5-line C++ Solution, Easy to Understand

  • 0

    The idea is if some low value symbol appears before high value one, it means less not plus.

    class Solution {
        int romanToInt(string s) {
            unordered_map<char,int> table({{'M',1000},{'D',500},{'C',100},{'L',50},{'X',10},{'V',5},{'I',1}});
            int res=0;
            for(int i=0;i<s.size();i++)
            return res;

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