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50485f7c8e
* Fix several typos * Update bit_manipulation/README.md Co-authored-by: John Law <johnlaw.po@gmail.com> * Update double_sort.py Co-authored-by: John Law <johnlaw.po@gmail.com>
53 lines
1.4 KiB
Python
53 lines
1.4 KiB
Python
# https://www.tutorialspoint.com/python3/bitwise_operators_example.htm
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def binary_and(a: int, b: int) -> str:
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"""
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Take in 2 integers, convert them to binary,
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return a binary number that is the
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result of a binary and operation on the integers provided.
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>>> binary_and(25, 32)
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'0b000000'
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>>> binary_and(37, 50)
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'0b100000'
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>>> binary_and(21, 30)
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'0b10100'
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>>> binary_and(58, 73)
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'0b0001000'
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>>> binary_and(0, 255)
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'0b00000000'
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>>> binary_and(256, 256)
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'0b100000000'
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>>> binary_and(0, -1)
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Traceback (most recent call last):
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...
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ValueError: the value of both inputs must be positive
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>>> binary_and(0, 1.1)
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Traceback (most recent call last):
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...
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TypeError: 'float' object cannot be interpreted as an integer
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>>> binary_and("0", "1")
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Traceback (most recent call last):
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...
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TypeError: '<' not supported between instances of 'str' and 'int'
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"""
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if a < 0 or b < 0:
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raise ValueError("the value of both inputs must be positive")
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a_binary = str(bin(a))[2:] # remove the leading "0b"
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b_binary = str(bin(b))[2:] # remove the leading "0b"
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max_len = max(len(a_binary), len(b_binary))
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return "0b" + "".join(
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str(int(char_a == "1" and char_b == "1"))
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for char_a, char_b in zip(a_binary.zfill(max_len), b_binary.zfill(max_len))
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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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