# 1491. Average Salary Excluding the Minimum and Maximum Salary

Easy
You are given an array of unique integers `salary` where `salary[i]` is the salary of the `ith` employee.
Return the average salary of employees excluding the minimum and maximum salary. Answers within `10-5` 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] <= 106`
• All the integers of `salary` are unique.

### 解題

func average(salary []int) float64 {
sort.Ints(salary)
sum := 0
for i:=1;i<len(salary)-1; i++ {
sum += salary[i]
}
return float64(sum)/float64(len(salary)-2)
}