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40 lines
856 B
Python
40 lines
856 B
Python
"""
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Author : Alexander Pantyukhin
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Date : November 30, 2022
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Task:
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Given two int numbers. Return True these numbers have opposite signs
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or False otherwise.
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Implementation notes: Use bit manipulation.
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Use XOR for two numbers.
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"""
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def different_signs(num1: int, num2: int) -> bool:
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"""
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Return True if numbers have opposite signs False otherwise.
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>>> different_signs(1, -1)
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True
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>>> different_signs(1, 1)
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False
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>>> different_signs(1000000000000000000000000000, -1000000000000000000000000000)
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True
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>>> different_signs(-1000000000000000000000000000, 1000000000000000000000000000)
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True
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>>> different_signs(50, 278)
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False
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>>> different_signs(0, 2)
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False
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>>> different_signs(2, 0)
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False
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"""
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return num1 ^ num2 < 0
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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