剑指Offer 53

 1 # -*- coding:utf-8 -*-
 2 class Solution:
 3     def GetNumberOfK(self, data, k):
 4         n = len(data)
 5         if n == 0:
 6             return 0
 7         cnt = 0
 8         find = False
 9         for i in range(n):
10             if data[i] == k:
11                 cnt += 1
12                 if not find:
13                     find = True
14             else:
15                 if find:
16                     break
17         return cnt
18         # write code here