461. Hamming Distance

Posted 2020-11-09 The Tech Road

class Solution {
public:
    int hammingDistance(int x, int y) {
        int r = x ^ y;
        return bitCount(r);
    }
    int bitCount(int x) {
        int res = 0;
        while (x) {
            x -= x & (-x);
            res++;
        }
        return res;
    }
};