LeeCode-Number of 1 Bits

Write a function that takes an unsigned integer and returns the number of ’1' bits it has 

For example, the 32-bit integer ’11' has binary representation 00000000000000000000000000001011,

so the function should return 3.

 

int hammingWeight(uint32_t n)
{
    int count=0;
    while(n)
    {
        n=n&(n-1);
        count++;
    }
    return count;
}