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# convert numbers into different number systems
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# iterative version
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import sys
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def user_input():
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number = int(input('decimal number to convert: '))
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return number
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def decimal_to_binary(number):
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# decimal to binary
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decimal_number = ''
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# set div to a number to make the while loop work
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div = 1
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while (div != 0):
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div = number // 2
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reminder = number % 2
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number = div
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#print(reminder)
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decimal_number += str(reminder)
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return print('binary: ', decimal_number[::-1])
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def decimal_to_octal(number):
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octal_number = ''
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div = 1
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while (div != 0):
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div = number // 8
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reminder = number % 8
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number = div
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octal_number += str(reminder)
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return print('octal: ', octal_number[::-1])
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def decimal_to_duodecimal(number):
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duodecimal_number = ''
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div = 1
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while (div != 0):
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div = number // 12
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reminder = number % 12
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if (reminder > 9):
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reminder = switcher(reminder)
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number = div
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duodecimal_number += str(reminder)
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return print('duodecimal: ', duodecimal_number[::-1])
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def decimal_to_hex(number):
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hex_number = ''
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div = 1
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while (div != 0):
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div = number // 16
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reminder = number % 16
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if (reminder > 9):
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reminder = switcher(reminder)
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number = div
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hex_number += str(reminder)
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return print('hexadezimal: ', hex_number[::-1])
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# switcher to select the correct char for hex number lager then 9
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def switcher(n):
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switcher = {
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10: 'A',
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11: 'B',
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12: 'C',
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13: 'D',
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14: 'E',
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15: 'F'
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}
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return switcher.get(n)
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def main():
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number = user_input()
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decimal_to_binary(number)
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decimal_to_octal(number)
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decimal_to_duodecimal(number)
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decimal_to_hex(number)
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if __name__ == "__main__":
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main()
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