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Roman_numerals_helper.py
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159 lines (128 loc) · 4.08 KB
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class RomanNumerals():
@staticmethod
def from_roman(roman):
#roman = (input())
number = 0
array = []
#roman = starter[:3]
while roman != '':
if roman.startswith('M'):
number += 1000
roman = roman[1:]
if roman.startswith('CM'):
number +=900
roman = roman[2:]
if roman.startswith('DCCC'):
number += 800
roman = roman[4:]
if roman.startswith('DCC'):
number += 700
roman = roman[3:]
if roman.startswith('DC'):
number += 600
roman = roman[2:]
if roman.startswith('D'):
number += 500
roman = roman[1:]
if roman.startswith('CD'):
number += 400
roman = roman[2:]
if roman.startswith('CCC'):
number += 300
roman = roman[3:]
if roman.startswith('CC'):
number += 200
roman = roman[2:]
if roman.startswith('C'):
number += 100
roman = roman[1:]
if roman.startswith('XC'):
number += 90
roman = roman[2:]
if roman.startswith('LXXX'):
number += 80
roman = roman[4:]
if roman.startswith('LXX'):
number += 70
roman = roman[3:]
if roman.startswith('LX'):
number += 60
roman = roman[2:]
if roman.startswith('L'):
number += 50
roman = roman[1:]
if roman.startswith('XL'):
number += 40
roman = roman[2:]
if roman.startswith('XXX'):
number += 30
roman = roman[3:]
if roman.startswith('XX'):
number += 20
roman = roman[2:]
if roman.startswith('X'):
number += 10
roman = roman[1:]
if roman.startswith('IX'):
number += 9
roman = roman[2:]
if roman.startswith('VIII'):
number += 8
roman = roman[4:]
if roman.startswith('VII'):
number += 7
roman = roman[3:]
if roman.startswith('VI'):
number += 6
roman = roman[2:]
if roman.startswith('V'):
number += 5
roman = roman[1:]
if roman.startswith('IV'):
number += 4
roman = roman[2:]
if roman.startswith('III'):
number += 3
roman = roman[3:]
if roman.startswith('II'):
number += 2
roman = roman[2:]
if roman.startswith('I'):
number += 1
roman = roman[1:]
s = list(roman)
print(number)
@staticmethod
def to_roman(number):
#number = int(input())
roman = ''
def encoder(num, let, nlet, nnlet, roman=''): # final
if num == 9:
roman += let + nnlet
if 4 < num < 9:
roman += nlet
for i in range(num-5):
roman += let
if num == 4:
roman += let + nlet
if num <= 3:
for i in range(num):
roman += let
return roman
while True:
if number >= 1000:
roman += 'M'
number -= 1000
if number <= 999:
roman += encoder(int(number/100), 'C', 'D', 'M')
number %= 100
if number <= 99:
roman += encoder(int(number/10), 'X', 'L', 'C')
number %= 10
if number <= 9:
roman += encoder(number, 'I', 'V', 'X')
number -= 9
if number < 9:
break
print(roman)
RomanNumerals.to_roman(2008)