import java.util.*; public class Car implements Comparable { private int m_inventory; // the number of cars of this make/model private String m_make; // the make of a car private String m_model; // the model of a car // Creates a new car. // This takes the inventory as a String but the inventory is // stored in the class as an integer. As a result, you must // convert the inventory to an integer. // This Should also set inventory to 0 if the inventory passed // is not a valid integer. public Car(String inventory, String make, String model) { // TODO: Part 6 - use a try/catch to set inventory to 0 // if the inventory is not a valid integer m_inventory = Integer.parseInt(inventory); m_make = make; m_model = model; } // Returns the inventory of cars of this make/model. public int getInventory() { // TODO: Part 1 } // Increases the inventory by one. public void increaseInventory() { // TODO Part 2 } // Decreases the inventory by one. // Don't let the inventory get less than 0. public void decreaseInventory() { // TODO: Part 2 } // Returns the make. public String getMake() { // TODO: Part 1 } // Returns the model. public String getModel() { // TODO: Part 1 } @Override // Returns a string in the following format: // make model (inventory) // For example: Toyota Prius (5) public String toString() { // TODO: Part 1 } @Override // Compares two cars based on their inventory (descending order). public int compareTo(Car other) { // TODO: Part 3 } } import java.util.*; public class Lot { // Given a make, this map should return a list of // all of the cars on the lot of that make. private HashMap> m_cars; // Creates an empty lot. public Lot() { m_cars = new HashMap>(); } // Adds a car to the lot. public void addCar(Car c) { if (m_cars.get(c.getMake()) == null) m_cars.put(c.getMake(), new ArrayList()); m_cars.get(c.getMake()).add(c); } // Return a list of cars on the lot of // the specified make. public ArrayList getCars(String make) { // TODO: Part 4 } // Return a list of cars on the lot of // the specified make. The list should be sorted // by inventory in descending order. public ArrayList getCarsSorted(String make) { // TODO: Part 4 } // Return the total inventory of cars on the lot // of the specified make. public int getInventory(String make) { // TODO: Part 5 } } class Main { public static void main(String[] args) { // Create some car make/models... Car c1 = new Car("10", "Toyota", "Camry"); Car c2 = new Car("4", "Toyota", "Prius"); Car c3 = new Car("16", "Toyota", "Rav4"); Car c4 = new Car("4", "Hyundai", "Kona Electric"); Car c5 = new Car("8", "Honda", "Civic"); Car c6 = new Car("3", "Honda", "CRV"); // Put the cars on a lot... Lot lot1 = new Lot(); lot1.addCar(c1); lot1.addCar(c2); lot1.addCar(c3); lot1.addCar(c4); lot1.addCar(c5); lot1.addCar(c6); // Print the make/models... System.out.println("Make:"); System.out.println(lot1.getCars("Toyota")); System.out.println(lot1.getCars("Hyundai")); System.out.println(lot1.getCars("Honda")); System.out.println(lot1.getCars("Tesla")); System.out.println(); // Print the make/models sorted in descending // order by inventory... System.out.println("Make sorted by inventory:"); System.out.println(lot1.getCarsSorted("Toyota")); System.out.println(lot1.getCarsSorted("Hyundai")); System.out.println(lot1.getCarsSorted("Honda")); System.out.println(lot1.getCarsSorted("Tesla")); System.out.println(); // Print the total inventory by make... System.out.println("Inventory by make:"); System.out.println(lot1.getInventory("Toyota") + " Toyotas"); System.out.println(lot1.getInventory("Hyundai") + " Hyundais"); System.out.println(lot1.getInventory("Honda") + " Hondas"); System.out.println(lot1.getInventory("Tesla") + " Teslas"); System.out.println(); } } this is the output that should be produced by main: Make: [Toyota Camry (10), Toyota Prius (4), Toyota Rav4 (16)] [Hyundai Kona Electric (4)] [Honda Civic (8), Honda CRV (3)] [] Make sorted by inventory: [Toyota Rav4 (16), Toyota Camry (10), Toyota Prius (4)] [Hyundai Kona Electric (4)] [Honda Civic (8), Honda CRV (3)] []
import java.util.*;
public class Car implements Comparable<Car>
{
private int m_inventory; // the number of cars of this make/model
private String m_make; // the make of a car
private String m_model; // the model of a car
// Creates a new car.
// This takes the inventory as a String but the inventory is
// stored in the class as an integer. As a result, you must
// convert the inventory to an integer.
// This Should also set inventory to 0 if the inventory passed
// is not a valid integer.
public Car(String inventory, String make, String model)
{
// TODO: Part 6 - use a try/catch to set inventory to 0
// if the inventory is not a valid integer
m_inventory = Integer.parseInt(inventory);
m_make = make;
m_model = model;
}
// Returns the inventory of cars of this make/model.
public int getInventory()
{
// TODO: Part 1
}
// Increases the inventory by one.
public void increaseInventory()
{
// TODO Part 2
}
// Decreases the inventory by one.
// Don't let the inventory get less than 0.
public void decreaseInventory()
{
// TODO: Part 2
}
// Returns the make.
public String getMake()
{
// TODO: Part 1
}
// Returns the model.
public String getModel()
{
// TODO: Part 1
}
@Override
// Returns a string in the following format:
// make model (inventory)
// For example: Toyota Prius (5)
public String toString()
{
// TODO: Part 1
}
@Override
// Compares two cars based on their inventory (descending order).
public int compareTo(Car other)
{
// TODO: Part 3
}
}
import java.util.*;
public class Lot
{
// Given a make, this map should return a list of
// all of the cars on the lot of that make.
private HashMap<String, ArrayList<Car>> m_cars;
// Creates an empty lot.
public Lot()
{
m_cars = new HashMap<String, ArrayList<Car>>();
}
// Adds a car to the lot.
public void addCar(Car c)
{
if (m_cars.get(c.getMake()) == null)
m_cars.put(c.getMake(), new ArrayList<Car>());
m_cars.get(c.getMake()).add(c);
}
// Return a list of cars on the lot of
// the specified make.
public ArrayList<Car> getCars(String make)
{
// TODO: Part 4
}
// Return a list of cars on the lot of
// the specified make. The list should be sorted
// by inventory in descending order.
public ArrayList<Car> getCarsSorted(String make)
{
// TODO: Part 4
}
// Return the total inventory of cars on the lot
// of the specified make.
public int getInventory(String make)
{
// TODO: Part 5
}
}
class Main
{
public static void main(String[] args)
{
// Create some car make/models...
Car c1 = new Car("10", "Toyota", "Camry");
Car c2 = new Car("4", "Toyota", "Prius");
Car c3 = new Car("16", "Toyota", "Rav4");
Car c4 = new Car("4", "Hyundai", "Kona Electric");
Car c5 = new Car("8", "Honda", "Civic");
Car c6 = new Car("3", "Honda", "CRV");
// Put the cars on a lot...
Lot lot1 = new Lot();
lot1.addCar(c1);
lot1.addCar(c2);
lot1.addCar(c3);
lot1.addCar(c4);
lot1.addCar(c5);
lot1.addCar(c6);
// Print the make/models...
System.out.println("Make:");
System.out.println(lot1.getCars("Toyota"));
System.out.println(lot1.getCars("Hyundai"));
System.out.println(lot1.getCars("Honda"));
System.out.println(lot1.getCars("Tesla"));
System.out.println();
// Print the make/models sorted in descending
// order by inventory...
System.out.println("Make sorted by inventory:");
System.out.println(lot1.getCarsSorted("Toyota"));
System.out.println(lot1.getCarsSorted("Hyundai"));
System.out.println(lot1.getCarsSorted("Honda"));
System.out.println(lot1.getCarsSorted("Tesla"));
System.out.println();
// Print the total inventory by make...
System.out.println("Inventory by make:");
System.out.println(lot1.getInventory("Toyota") + " Toyotas");
System.out.println(lot1.getInventory("Hyundai") + " Hyundais");
System.out.println(lot1.getInventory("Honda") + " Hondas");
System.out.println(lot1.getInventory("Tesla") + " Teslas");
System.out.println();
}
}
this is the output that should be produced by main:
Make: [Toyota Camry (10), Toyota Prius (4), Toyota Rav4 (16)]
[Hyundai Kona Electric (4)]
[Honda Civic (8), Honda CRV (3)]
[]
Make sorted by inventory:
[Toyota Rav4 (16), Toyota Camry (10), Toyota Prius (4)]
[Hyundai Kona Electric (4)]
[Honda Civic (8), Honda CRV (3)]
[]
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