Design an Algorithm for the following Java application that asks a customer to: enter the quantity of items requested from a mail-order catalogue, and the price of each item. The program will then return & display the totalCost of the required items. The results are formatted to one place of decimal. Write a method called calculateCost () which returns the totalCost including discount given to the customer and stores the value in totalCost. As a special offer the customer will receive an 11% discount if twenty or more units of the item are purchased.