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Incorrect Code Example for "Set kth Bit" in Binary Section #677

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@roemvaar

Description

@roemvaar

In the Binary Techniques section of the repository, the code example for "Set kth Bit" contains an error. The current code is written as:

num |= (1 >> k);

However, this implementation is incorrect. The correct code should be:

num |= (1 << k);

Issue:

The bit-shift operator is incorrectly specified as >> (right shift) instead of << (left shift). Using >> will shift bits to the right, which does not align with the intended functionality of setting the kth bit. To set the kth bit, we need to shift the bit 1 to the left by k positions.

Expected Behavior:

The code should correctly set the kth bit of the given number num by performing a left shift operation (1 << k) and then using the bitwise OR operator (|=).

Activity

linked a pull request that will close this issue on Nov 30, 2024
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        Incorrect Code Example for "Set kth Bit" in Binary Section · Issue #677 · yangshun/tech-interview-handbook