leetcode 169. 求众数(Majority Element) python3 多种思路( 利用set() / sorted()一行解决 )

class Solution:
    def majorityElement(self, nums):
        """
        :type nums: List[int]
        :rtype: int
        """
        # method one 运用set()特性
        # for i in set(nums):
        #     if nums.count(i) * 2 > len(nums):   
        #         return i 


        # method two 排序中位数
        return  sorted(nums)[ len(nums) // 2 ]