y = ((x & 0x55) << 1) | ((x >> 1) & 0x55).

Note, 0x55 = 01010101 in binary.

Dave

On Jun 27, 7:18 am, rShetty <[email protected]> wrote:
> Given a byte, write a code to swap every two bits. [Using bit
> operators]
>
>  Eg: Input: 10 01 11 01 Output: 01 10 11 10

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