Returning the mean of a list of salaries without the max or min salaries.

avg_salary.py

# From this problem on leetcode. 

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

# 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: 
# Input: salary = [4000,3000,1000,2000]
# Output: 2500.00000

class Solution(object):
    def average(self, salary):
        """
        :type salary: List[int]
        :rtype: float
        """
        salary = sorted(salary)
        numerator = float(sum(salary[1:len(salary)-1]))
        denom = len(salary)-2
        return(numerator/denom)