统计一个数字在排序数组中出现的次数。

python3解法：

# -*- coding:utf-8 -*-
class Solution:
    def GetNumberOfK(self, data, k):
        # write code here
        dic = {}
        for num in data:
            if num in dic:
                dic[num] += 1
            else:
                dic[num] = 1
        return dic[k] if k in dic else 0