剑指offer-数组中出现次数超过一半的数字（python）

# -*- coding:utf-8 -*-
class Solution:
    def MoreThanHalfNum_Solution(self, numbers):
        # write code here
        d={}
        n=len(numbers)
        if not numbers:
            return 0
        for i in range(n):
            if numbers.count(numbers[i])>n//2:
                return numbers[i]
        return 0