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Problem Solving/LeetCode

Today's Challenge

fabichoi 2022. 8. 15. 23:45

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

 

Roman to Integer - LeetCode

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leetcode.com

4, 9 등을 치환한 뒤, replace를 체인으로 연결해서 풀면 된다.

class Solution:
    def romanToInt(self, s: str) -> int:
        table = {'I': 1, 'V': 5, 'X': 10, 'L': 50, 'C': 100, 'D': 500, 'M': 1000}
        s = s.replace("IV", "IIII").replace("IX", "VIIII").replace("XL", "XXXX").replace("XC", "LXXXX").replace("CD", "CCCC").replace("CM", "DCCCC")
        return sum(map(lambda x: table[x], s))
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