标签:10 arr Elements 1619 Removing remove Input Output Example
题目如下:
Given an integer array
arr
, return the mean of the remaining integers after removing the smallest5%
and the largest5%
of the elements.Answers within
10-5
of the actual answer will be considered accepted.Example 1:
Input: arr = [1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3] Output: 2.00000 Explanation: After erasing the minimum and the maximum values of this array, all elements are equal to 2, so the mean is 2.Example 2:
Input: arr = [6,2,7,5,1,2,0,3,10,2,5,0,5,5,0,8,7,6,8,0] Output: 4.00000Example 3:
Input: arr = [6,0,7,0,7,5,7,8,3,4,0,7,8,1,6,8,1,1,2,4,8,1,9,5,4,3,8,5,10,8,6,6,1,0,6,10,8,2,3,4] Output: 4.77778Example 4:
Input: arr = [9,7,8,7,7,8,4,4,6,8,8,7,6,8,8,9,2,6,0,0,1,10,8,6,3,3,5,1,10,9,0,7,10,0,10,4,1,10,6,9,3,6,0,0,2,7,0,6,7,2,9,7,7,3,0,1,6,1,10,3] Output: 5.27778Example 5:
Input: arr = [4,8,4,10,0,7,1,3,7,8,8,3,4,1,6,2,1,1,8,0,9,8,0,3,9,10,3,10,1,10,7,3,2,1,4,9,10,7,6,4,0,8,5,1,2,1,6,2,5,0,7,10,9,10,3,7,10,5,8,5,7,6,7,6,10,9,5,10,5,5,7,2,10,7,7,8,2,0,1,1] Output: 5.29167Constraints:
20 <= arr.length <= 1000
arr.length
is a multiple of20
.0 <= arr[i] <= 105
解题思路:送分题。
代码如下:
class Solution(object): def trimMean(self, arr): """ :type arr: List[int] :rtype: float """ arr.sort() remove = len(arr)/20 return float(sum(arr[remove:-remove]))/ float(len(arr) - 2*remove)
标签:10,arr,Elements,1619,Removing,remove,Input,Output,Example 来源: https://www.cnblogs.com/seyjs/p/14931104.html
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