Formatted question description: https://leetcode.ca/all/1491.html

# 1491. Average Salary Excluding the Minimum and Maximum Salary (Easy)

Given an array of unique integers salary where salary[i] is the salary of the employee i.

Return the average salary of employees excluding the minimum and maximum salary.

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


Example 3:

Input: salary = [6000,5000,4000,3000,2000,1000]
Output: 3500.00000


Example 4:

Input: salary = [8000,9000,2000,3000,6000,1000]
Output: 4750.00000


Constraints:

• 3 <= salary.length <= 100
• 10^3 <= salary[i] <= 10^6
• salary[i] is unique.
• Answers within 10^-5 of the actual value will be accepted as correct.

Related Topics:
Array, Sort

## Solution 1.

// OJ: https://leetcode.com/problems/average-salary-excluding-the-minimum-and-maximum-salary/

// Time: O(N)
// Space: O(1)
class Solution {
public:
double average(vector<int>& A) {
return (accumulate(begin(A), end(A), 0.) - *max_element(begin(A), end(A)) - *min_element(begin(A), end(A))) / (A.size() - 2);
}
};


Java

class Solution {
public double average(int[] salary) {
int length = salary.length;
double sum = 0;
int max = Integer.MIN_VALUE, min = Integer.MAX_VALUE;
for (int num : salary) {
sum += num;
max = Math.max(max, num);
min = Math.min(min, num);
}
return (sum - max - min) / (length - 2);
}
}