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Create python code for roman to integer #60

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Create python code for roman to integer #60

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27 changes: 27 additions & 0 deletions Roman_number_to_integer/code.py
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Original file line number Diff line number Diff line change
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class Solution(object):
def romanToInt(self, s):
"""
:type s: str
:rtype: int
"""

roman_to_int = {
"I": 1,
"V": 5,
"X": 10,
"L": 50,
"C": 100,
"D": 500,
"M": 1000
}

num = 0
for i in range(len(s) - 1):
# Check if the current value is less than the next
if roman_to_int[s[i]] < roman_to_int[s[i + 1]]:
# If IV, then it's 5 - 1, which is 4
num -= roman_to_int[s[i]]
else:
num += roman_to_int[s[i]]

return num + roman_to_int[s[-1]]