leetcode1287. Element Appearing More Than 25% In Sorted Array

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题目如下：

Given an integer array sorted in non-decreasing order, there is exactly one integer in the array that occurs more than 25% of the time.
Return that integer.
Example 1:

Input: arr = [1,2,2,6,6,6,6,7,10] Output: 6

Constraints:

1 < = arr.length < = 10^4

0 < = arr[i] < = 10^5

解题思路：最直接的方法是统计每个元素出现的次数。
代码如下：

class Solution(object): def findSpecialInteger(self, arr): """ :type arr: List[int] :rtype: int """ dic = {} res = 0 for i in arr: dic[i] = dic.setdefault(i,0) + 1 if dic[i] > len(arr)/4: res = i break return res

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