Convert a Roman Numeral to an IntegerΒΆ
Write a python class to convert a roman numeral to an integer.
class py_solution:
def roman_to_int(self, s):
rom_val = {'I': 1, 'V': 5, 'X': 10, 'L': 50, 'C': 100, 'D': 500, 'M': 1000}
int_val = 0
for i in range(len(s)):
if i > 0 and rom_val[s[i]] > rom_val[s[i - 1]]:
int_val += rom_val[s[i]] - 2 * rom_val[s[i - 1]]
else:
int_val += rom_val[s[i]]
return int_val
print(py_solution().roman_to_int('MMMCMLXXXVI')) # 3986
print(py_solution().roman_to_int('MMMM')) # 4000
print(py_solution().roman_to_int('C')) # 100