461. Hamming Distance

—Easy

https://leetcode.com/problems/hamming-distance/

Code：

class Solution:
    def hammingDistance(self, x: int, y: int) -> int:
        ans = 0
        X = list(map(int,list(bin(x).replace('0b',''))))
        Y = list(map(int,list(bin(y).replace('0b',''))))
        length = max(len(X),len(Y))
        if len(X) < length:
            X = [0]*(length-len(X))+X
        else:
            Y = [0]*(length-len(Y))+Y
        Z = X + Y
        for i in range(length):
            if X[i]+Y[i] == 1:
                ans += 1
        return ans

# s = Solution()
# print(s.hammingDistance(x = 1, y = 4))

思路：

1.解题时不支持numpy

2.map的应用

3.bin的应用