开始恢复更新了 - -
Python 3 实现：
源代码已上传 Github，持续更新。
"""
13. Roman to Integer
Given a roman numeral, convert it to an integer.
Input is guaranteed to be within the range from 1 to 3999.
"""
class Solution:
def romanToInt(self, s):
"""
:type s: str
:rtype: int
"""
dic = {'I': 1, 'V': 5, 'X': 10, 'L': 50, 'C': 100, 'D': 500, 'M': 1000}
result = dic[s[0]]
for i in range(1, len(s)):
result = result + dic[s[i]]
if dic[s[i]] > dic[s[i - 1]]:
result = result - 2 * dic[s[i - 1]]
return result
if __name__ == '__main__':
solution = Solution()
print(solution.romanToInt("MCMXCVI"))
# print(solution.romanToInt("IV"))
