题目
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.
分析
Code python
‘’’
class Solution(object):
def hammingDistance(self, x, y):
“””
:type x: int
:type y: int
:rtype: int
“””
def func(x, y, dis):
if (x+y) == 0:
return dis
if (x+y)%2 == 1:
dis = dis + 1
return func(x//2, y//2, dis)
dis = 0
r = func(x, y, dis)
return r
‘’’
