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54 lines
1.6 KiB
Python
54 lines
1.6 KiB
Python
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from typing import List
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import sys
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matches_roman_arabic = [
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{'arabic': 1000, 'roman': 'M'},
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{'arabic': 900, 'roman': 'CM'},
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{'arabic': 500, 'roman': 'D'},
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{'arabic': 400, 'roman': 'CD'},
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{'arabic': 100, 'roman': 'C'},
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{'arabic': 90, 'roman': 'XC'},
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{'arabic': 50, 'roman': 'L'},
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{'arabic': 40, 'roman': 'XL'},
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{'arabic': 10, 'roman': 'X'},
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{'arabic': 9, 'roman': 'IX'},
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{'arabic': 5, 'roman': 'V'},
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{'arabic': 4, 'roman': 'IV'},
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{'arabic': 1, 'roman': 'I'}
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]
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def convert_arabic_to_roman(arabic_number: int) -> str:
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roman_number: str = ''
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for match in matches_roman_arabic:
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while arabic_number >= match['arabic']:
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roman_number = roman_number + match['roman']
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arabic_number = arabic_number - match['arabic']
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return roman_number
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def convert_roman_to_arabic(roman_number: str) -> int:
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arabic_number: int = 0
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for match in matches_roman_arabic:
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while True:
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try:
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if roman_number.index(match['roman']) == 0:
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arabic_number = arabic_number + match['arabic']
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roman_number = roman_number.replace(match['roman'], '', 1)
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else:
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break
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except ValueError:
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break
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return arabic_number
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input_values: List[str] = []
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for value in sys.stdin:
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input_values.append(value.rstrip('\n'))
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convert_type = input_values[0]
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if convert_type == 'arabic to roman':
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print(convert_arabic_to_roman(int(input_values[1])))
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else:
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print(convert_roman_to_arabic(input_values[1]))
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