1. FIRST:

Sophie, Sally and Jack's financing for their Car Lot business is going well. The next step is to create a prototype CarLot class.

Write a class CarLot

A CarLot has only one instance variable, an ArrayList of Car elements

CarLot has a single, no argument constructor.

Accessors

Car find(String carId) returns the Car whose identifier matches carId, or null if there is no such Car.

Car get(int position) returns the Car occupying the given position in the CarLot. The first car added to the CarLot is position 0, the next car added is position 1, etc.

double getCarAverageMPG() returns the average MPG of all cars on the CarLot. If the CarLot is empty, return -1.

Car getCarBestMPG() returns the Car with the best MPG on the CarLot. If more than one Car has the best MPG, return the Car with at the lowest position. (So if Cars at positions 5 and 8 both have the best MPG, return the Car at position 5). If the CarLot is empty, return null.

int size() returns the number of Cars on the CarLot

String toString() returns a String representation of the CarLot

Mutators

boolean add(Car carToAdd) that adds a Car to the CarLot. add returns true if the Car was added successfully, false otherwise.

Test Class

Write a CarLotMain class that has only a main method. CarLotMain is a console program that asks the user for the number of cars to be added to a CarLot. For each Car, the program asks the user for that Car's information and adds the Car to the CarLot. When all the cars have been entered, it prints the size of the CarLot, and the contents of CarLot ordered by position. Finally, the program asks the user for one Car identifier, and displays the Car with that identifier.

2. SECOND : CarLot Continued

Sophie, Sally and Jack are about to open for business. Their CarLot class needs some enhancements, however. Add to our previous CarLot the following methods:

Accessors

Car getCarHighestMilage() returns the Car with the highest mileage in the CarLot. If the CarLot is empty, return null.

int getTotalMiles() returns the total mileage of all cars on the CarLot

modify toString to include the above information, but don't include the sorted-by-MPG list.

ArrayList getSortedByMPG() returns a new ArrayList that is ordered by MPG (highest MPG first). The returned ArrayList is empty if the CarLot is empty. Note that this is an accessor; the method must not modify the instance variable in any way. Modify the SelectionSort code from the book to perform the sort.