[leetcode] problem 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

Example

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

Code

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public int (int x, int y) {
    int result = 0;
    int xor = x ^ y;

    while (xor != 0) {
        result++;  
        xor &= xor - 1;
    }

    return result;
}