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38 lines
797 B
Python
38 lines
797 B
Python
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def decimal_to_negative_base_2(num: int) -> int:
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"""
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This function returns the number negative base 2
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of the decimal number of the input data.
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Args:
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int: The decimal number to convert.
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Returns:
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int: The negative base 2 number.
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Examples:
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>>> decimal_to_negative_base_2(0)
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0
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>>> decimal_to_negative_base_2(-19)
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111101
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>>> decimal_to_negative_base_2(4)
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100
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>>> decimal_to_negative_base_2(7)
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11011
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"""
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if num == 0:
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return 0
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ans = ""
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while num != 0:
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num, rem = divmod(num, -2)
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if rem < 0:
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rem += 2
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num += 1
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ans = str(rem) + ans
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return int(ans)
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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