// One of several ways in C:
unsigned swap_bits(unsigned x, int i, int j)
{
r = x;
if (x & (1u << i)) r |= (1u << j); else r &= ~(1u << j);
if (x & (1u << j)) r |= (1u << i); else r &= ~(1u << i);
return r;
}
On Sep 13, 2:50 pm, kumar raja <[email protected]> wrote:
> Suppose a number 'n' is given and two bits positions i,j present in binary
> representation of n .
>
> Then how to exchange the contents of the two bits i and j.
>
> E.g. n= 13
> its binary representation is 0000 1101 (just for now consider 8 bit number)
>
> i= 2,j=6
>
> o/p : 0100 1001 = 73
>
> please suggest some effective way to do this...
>
> --
> Regards
> Kumar Raja
> M.Tech(SIT)
> IIT Kharagpur,
> [email protected]
> 7797137043.
> 09491690115.
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