Write a program that prompts a user for two integers and then sums all the values between and including the two integers. Ensure that the second integer entered is larger than the first by continuing to reprompt the user until it is. Then pass the two integers to a recursive method that returns the sum of the integers to the main() method, where it is displayed. The method works by adding each integer in the set to the running sum of all the integers that are larger. You can accomplish this by continually passing two values to the method: the low value and the value that is one less than the current high value. The base case occurs when the second value passed is no longer greater than the first. Save the program as AddingRecursively.java.
Modify the AddingRecursively class in Exercise 1 so that the program accepts any two integers from the user without requiring the user to make sure the second value is larger than the first. Save the program as AddingRecursively2.java.
Write a program that prompts the user for two integers. Pass them to a recursive method that returns the product of the two integers without using multiplication. In other words, instead of using the multiplication operator, write the method using the knowledge that multiplication can be represented as a series of addition operations. For example, 4 multiplied by 6 is equivalent to 6 + 6 + 6 + 6. Save the file as MultiplicationByAdding.java.
Roberto has purchased buildings that contain apartments to rent. Create an Apartment class that contains fields for the street address, apartment number, monthly rent amount, and number of bedrooms for each Apartment that he owns. Include a constructor that assigns field values to the class, a toString() method that displays the Apartment values, and a compareTo() method that compares Apartment objects based on the rent value. Include any other methods that you think you might need. Save the file as Apartment.java.
Write an application that contains a LinkedList in which to store Apartment objects. Prompt the user for values for Apartments and add them to the LinkedList until a sentinel value is entered. Sort the Apartments by rent value, and then display the sorted list. Save the file as ApartmentsLinkedList.java.
Roberto sometimes sells one of his buildings. Modify the ApartmentsLinkedList application so that after data entry is complete and the list of Apartment objects is displayed, the application prompts the user for a street address to eliminate. Remove all the Apartment objects at the specified street address, and display the list of Apartments again. Save the file as ApartmentsLinkedList2.java.
