either count it with a for loop or if you are using C, use
__builtin_popcount(int x)

or

x is given
int count = 0;
for(int i=0; i<32;i++) count += (x & (1<<i)) != 0;

On Tue, Aug 3, 2010 at 12:04 PM, amit <amitjaspal...@gmail.com> wrote:

> (3*4096+15*256+3*16+3). How many 1's are there in the binary
> representation of the result.
>
> Is there a quick way to count the number of set bits in this number
> manually???
>
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