[LeetCode]Hamming Distance

题目描述：

LeetCode 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< 2³¹.

Example:

Input: x = 1, y = 4Output: 2Explanation:
1   (0 0 0 1)
4   (0 1 0 0)↑   ↑

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

题目大意：

两个整数的汉明距离是指其二进制不相等的位的个数。

给定两个整数x和y，计算汉明距离。

注意：

0 ≤ x, y < 2^31.

解题思路：

异或运算

Python代码：

class Solution(object):
    def hammingDistance(self, x, y):
        """
        :type x: int
        :type y: int
        :rtype: int
        """
        return bin(x ^ y).count('1')