461. Hamming Distance

The Hamming distance between two integers is the number of positions at which the corresponding bits are different.
Given two integers x and y, calculate the Hamming distance.
Note:
0 ≤ x, y < 2^31.

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Example:
Input: x = 1, y = 4
Output: 2

Explanation:
1 (0 0 0 1)
4 (0 1 0 0)

The above arrows point to positions where the corresponding bits are different.

var hammingDistance = function(x, y) {
    var result = 0;
    var n = x ^ y;
    while (n !== 0) {
        result++;
        n &= n - 1;
    }
    return result;
};