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leetcode/13-roman-to-integer/13-roman-to-integer.py
T

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714 B
Python

class Solution(object):
def romanToInt(self, s):
"""
:type s: str
:rtype: int
"""
rToInt = {
"I": 1,
"V": 5,
"X": 10,
"L": 50,
"C": 100,
"D": 500,
"M": 1000
}
mixes = {
"IV": 4,
"IX": 9,
"XL": 40,
"XC": 90,
"CD": 400,
"CM": 900
}
num = 0
while len(s) > 0:
if s[:2] in mixes:
num += mixes[s[:2]]
s = s[2:]
else:
num += rToInt[s[0]]
s = s[1:]
return num