【LeetCode】461. Hamming Distance【E】【90】

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 = 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.

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思路很简单，先转成二进制，然后计算异或，然后看一共有多少个1 就是结果了 

class Solution(object):
    def hammingDistance(self, x, y):

        return ((bin(x ^ y)[2:])).count('1')

        """
        :type x: int
        :type y: int
        :rtype: int
        """