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30 lines
705 B
Python
30 lines
705 B
Python
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def binary_coded_decimal(number: int) -> str:
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"""
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Find binary coded decimal (bcd) of integer base 10.
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Each digit of the number is represented by a 4-bit binary.
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Example:
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>>> binary_coded_decimal(-2)
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'0b0000'
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>>> binary_coded_decimal(-1)
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'0b0000'
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>>> binary_coded_decimal(0)
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'0b0000'
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>>> binary_coded_decimal(3)
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'0b0011'
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>>> binary_coded_decimal(2)
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'0b0010'
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>>> binary_coded_decimal(12)
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'0b00010010'
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>>> binary_coded_decimal(987)
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'0b100110000111'
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"""
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return "0b" + "".join(
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str(bin(int(digit)))[2:].zfill(4) for digit in str(max(0, number))
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)
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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