414. Third Maximum Number

找第3个大的数

class Solution(object):

    def thirdMax(self, nums):
        """
        :type nums: List[int]
        :rtype: int
        """
        nums = set(nums)
        if len(nums) < 3:
            return max(nums)
        nums.remove(max(nums))
        nums.remove(max(nums))

        return max(nums)

https://leetcode.com/problems/third-maximum-number/#/description