happy water questions” 1619. The mean value of the array after deleting some elements

Introduction: This article is compiled by the editor of Programming Notes# for you. It mainly introduces the knowledge related to the average value of the array after deleting some elements in “Practice every day, happy water question” 1619. I hope it will be helpful to you reference value. Article Table of Contents 🔴 Li button the original title ： 🟠Brief description of the topic： 🟡Problem solving ideas： 🟢C+&#43 ;code ： 🔵result display ： 🔴Lee deduction original title： 1619. Array mean value after deleting some elements &#x1f7e0 ;Title Description ： Give you an integer array arr ， Please delete the smallest 5% of the numbers and the largest 5% of the numbers ， the average of the remaining numbers. A result within 10-5 of the standard answer is considered correct. Example 1 ： Enter ：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 removing the largest and smallest elements in the array： xff0c;All elements are equal to 2，so the average is 2. Example 2 ： Enter ：arr = [6,2,7,5,1,2,0,3,10,2,5,0 ,5,5,0,8,7,6,8,0] Output ：4.00000 Example 3 ： Input ：arr & #61; [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& #xff1a; Enter ：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 ： 5.27778 Example 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]…