【LeetCode】求众数

class Solution(object):
    def majorityElement(self, nums):
        """
        :type nums: List[int]
        :rtype: int
        """
        if len(nums) < 2:
            return nums[0]
        target = len(nums) / 2
        num_dic = {}
        for i in nums:
            if i in num_dic.keys():
                num_dic[i] += 1
            else:
                 num_dic[i] = 1
            if num_dic[i] > target:
                 return i