solved: 1491. Average Salary Excluding the Minimum and Maximum Salary

Signed-off-by: rajput-hemant <[email protected]>

Author: rajput-hemant

src/1401-1500/1491 - Average Salary Excluding the Minimum and Maximum Salary/AverageSalaryExcludingTheMinimumAndMaximumSalary.java

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+import java.util.Arrays;
+
+public class AverageSalaryExcludingTheMinimumAndMaximumSalary {
+  public double average(int[] salary) {
+    Arrays.sort(salary);
+    int len = salary.length;
+    double res = 0;
+    for (int i = 1; i < len - 1; i++)
+      res += salary[i];
+    return res / (len - 2);
+  }
+}

src/1401-1500/1491 - Average Salary Excluding the Minimum and Maximum Salary/README.md

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+# 1491. Average Salary Excluding the Minimum and Maximum Salary [![share]](https://leetcode.com/problems/average-salary-excluding-the-minimum-and-maximum-salary)
+
+![easy]
+
+## Problem Statement:
+
+You are given an array of **unique** integers `salary` where` salary[i]` is the salary of the <code>i<sup>th</sup></code> employee.
+
+Return the average salary of employees excluding the minimum and maximum salary. Answers within <code>10<sup>-5</sup></code> of the actual answer will be accepted.
+
+### Example 1:
+
+```
+Input: salary = [4000,3000,1000,2000]
+Output: 2500.00000
+Explanation: Minimum salary and maximum salary are 1000 and 4000 respectively.
+Average salary excluding minimum and maximum salary is (2000+3000) / 2 = 2500
+```
+
+### Example 2:
+
+```
+Input: salary = [1000,2000,3000]
+Output: 2000.00000
+Explanation: Minimum salary and maximum salary are 1000 and 3000 respectively.
+Average salary excluding minimum and maximum salary is (2000) / 1 = 2000
+```
+
+### Constraints:
+
+- 3 <= salary.length <= 100
+- 1000 <= salary[i] <= 10<sup>6</sup>
+- All the integers of salary are **unique**.
+
+## Solutions:
+
+### [_Java_](./AverageSalaryExcludingTheMinimumAndMaximumSalary.java)
+
+```java
+public double average(int[] salary) {
+  Arrays.sort(salary);
+  int len = salary.length;
+  double res = 0;
+  for (int i = 1; i < len - 1; i++)
+    res += salary[i];
+  return res / (len - 2);
+}
+```
+
+### [_..._]()
+
+```
+
+```
+
+<!----------------------------------{ link }--------------------------------->
+
+[share]: https://img.icons8.com/external-anggara-blue-anggara-putra/20/000000/external-share-user-interface-basic-anggara-blue-anggara-putra-2.png
+[easy]: https://img.shields.io/badge/Difficulty-Easy-bright.svg
+[medium]: https://img.shields.io/badge/Difficulty-Medium-yellow.svg
+[hard]: https://img.shields.io/badge/Difficulty-Hard-red.svg