[LeetCode] 13. Roman to Integer
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1 class Solution 2 { 3 public: 4 int romanToInt(string s) 5 { 6 map<char, int> Map = {{'I', 1}, {'V', 5}, {'X', 10}, {'L', 50}, {'C', 100}, {'D', 500}, {'M', 1000}}; 7 int sum = 0; 8 for(int i = 0; i < s.length() - 1; i ++) 9 {10 if(Map[s[i]] < Map[s[i+1]])11 sum -= Map[s[i]];12 else13 sum += Map[s[i]];14 }15 sum += Map[s[s.length() - 1]];16 return sum;17 }18 };
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