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Algorithms Quiz | Sudo Placement [1.5] | Question 8

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Which of the following bitwise operations will always return a bitwise complement of x for any given unsigned integer x?


x ^ (x & (~x))


x & (x | (~x))


x | (x & (~x))


x ^ (x | (~x))

Answer: (D)


~x represents the bitwise complement of x.
x | (~x) performs a bitwise OR between x and its complement, resulting in all ones.
x ^ (x | (~x)) performs a bitwise XOR between x and all ones, which is equivalent to taking the bitwise complement of x.

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Last Updated : 16 Aug, 2018
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