알고리즘 2일차

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

class Solution {
    func romanToInt(_ s: String) -> Int {
        let dict = ["I":1, "V":5, "X":10, "L":50, "C":100, "D":500, "M":5000]
        var intArray = [Int]()
        var result = 0
        for i in s {
            for j in dict.keys {
                if String(i) == j {
                    intArray.append(dict[String(i)]!)
                }
            }
        }
        for i in 0..<intArray.count {
            if i+1 == intArray.count {
                break
            } else {
                if intArray[i] < intArray[i+1] {
                    intArray[i] = intArray[i] * -1
                }
            }
        }
        for i in 0..<intArray.count {
            result = result + intArray[i]
        }
        return result
    }
}