leetcode013-leetcode13-roman-to-integer.py

classSolution:
defromanToInt(self, s: str) ->int:
d=dict()
d= {
'I': 1,
'V': 5,
'X': 10,
'L': 50,
'C': 100,
'D': 500,
'M': 1000
 }

sum0=0
foriinrange(len(s)):
currentValue=d[s[i]]

ifi==len(s) -1ord[s[i+1]] <=currentValue: # d[s[i+1]]: nextValue
sum0+=d[s[i]]
else:
sum0-=d[s[i]]

returnsum0

sol=Solution()
print(sol.romanToInt("MCMXCIV"))