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* flake8 --max-line-length=88
* fixup! Format Python code with psf/black push
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44 lines
1.2 KiB
Python
44 lines
1.2 KiB
Python
"""Convert a Decimal Number to an Octal Number."""
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import math
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# Modified from:
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# https://github.com/TheAlgorithms/Javascript/blob/master/Conversions/DecimalToOctal.js
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def decimal_to_octal(num: int) -> str:
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"""Convert a Decimal Number to an Octal Number.
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>>> all(decimal_to_octal(i) == oct(i) for i
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... in (0, 2, 8, 64, 65, 216, 255, 256, 512))
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True
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"""
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octal = 0
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counter = 0
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while num > 0:
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remainder = num % 8
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octal = octal + (remainder * math.pow(10, counter))
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counter += 1
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num = math.floor(num / 8) # basically /= 8 without remainder if any
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# This formatting removes trailing '.0' from `octal`.
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return f"0o{int(octal)}"
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def main():
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"""Print octal equivalents of decimal numbers."""
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print("\n2 in octal is:")
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print(decimal_to_octal(2)) # = 2
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print("\n8 in octal is:")
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print(decimal_to_octal(8)) # = 10
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print("\n65 in octal is:")
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print(decimal_to_octal(65)) # = 101
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print("\n216 in octal is:")
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print(decimal_to_octal(216)) # = 330
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print("\n512 in octal is:")
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print(decimal_to_octal(512)) # = 1000
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print("\n")
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if __name__ == "__main__":
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main()
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