Hamming Distance

class Solution {
public:
    int hammingDistance(int x, int y) {
        int m = x ^ y;
        int distance = 0;
        while(m) {
            distance += m & 1;
            m = m >> 1;
        }
        return distance;
    }
};

class Solution {
public:
    int hammingDistance(int x, int y) {
        int m = x ^ y;
        int distance = 0;
        while(m) {
            m = m & (m - 1);
            distance++;
        }
        return distance;
    }
};