The Hamming distance between two integers is the number of positions at which the corresponding bits are different.

Given two integers `x` and `y`, return the Hamming distance between them.

Example 1:

    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.

Example 2:

    Input: x = 3, y = 1
    Output: 1

Constraints:

- `0 <= x, y <= 231 - 1`