leetcode#191 Number of 1 Bits

1. 문제

• https://leetcode.com/problems/number-of-1-bits/
  

2. 나의 풀이

class Solution(object):
    def hammingWeight(self, n):
        """
        :type n: int
        :rtype: int
        """
        # print(n, bin(n), str(bin(n)))
        binary_string = str(bin(n))
        return binary_string.count("1")

3. 남의 풀이