Templates
Apartment.java
package hwk7;
public class Apartment {
int numOfApartments; // the number of apartments of this type
Room[] rooms; // rooms in this type of apartment
Apartment(int numOfApartments, Room[] rooms) {
this.numOfApartments = numOfApartments;
this.rooms = rooms;
}
// Return the window orders for one apartment of this type as TotalOrder object
TotalOrder orderForOneUnit() {
// TODO
}
// Return the window orders for all apartments of this type
TotalOrder totalOrder() {
// TODO
}
public String toString() {
String ret = numOfUnits + " apartments with ";
for(Room room: rooms) {
ret += String.format("(%s)", room);
}
return ret;
}
}
class OneBedroom extends Apartment {
OneBedroom(int numOfUnits) {
super(numOfUnits, new Room[] { new LivingRoom(), new MasterBedroom() });
}
}
class TwoBedroom extends Apartment {
TwoBedroom(int numOfUnits) {
super(numOfUnits, new Room[] { new LivingRoom(), new MasterBedroom(), new GuestRoom() });
}
}
class ThreeBedroom extends Apartment {
ThreeBedroom(int numOfUnits) {
super(numOfUnits, new Room[] { new LivingRoom(), new MasterBedroom(), new GuestRoom(), new GuestRoom() });
}
}
Building.java
package hwk7;
public class Building {
Apartment[] apartments;
public Building(Apartment[] units) {
this.apartments = units;
}
// Return the total order all apartments in this building
TotalOrder order() {
// TODO
}
public String toString() {
String ret = "";
for(Apartment a: apartments) {
ret += a + "\n";
}
return ret;
}
}
Hwk7.java
package hwk7;
public class Hwk7 {
public static void main(String[] args) {
Apartment[] apartments = { new OneBedroom(20), new TwoBedroom(15), new ThreeBedroom(10) };
Building building = new Building(apartments);
TotalOrder orders = building.order();
System.out.println(building);
System.out.println("Window orders are:\n" + orders);
}
}
Room.java
package hwk7;
public class Room {
Window window;
int numOfWindows;
Room(Window window, int numOfWindows) {
this.window = window;
this.numOfWindows = numOfWindows;
}
WindowOrder order() {
return new WindowOrder(window, numOfWindows);
}
@Override
public String toString() {
return String.format("%d (%s)", numOfWindows, window);
}
@Override
public boolean equals(Object that){
if(other instanceof Room){
Room r = (Room)other;
return this.numOfWindows==r.numOfWindows&&this.window.equals(r.window);
}
else
return false;
}
}
class MasterBedroom extends Room {
MasterBedroom() {
super(new Window(4, 6), 3);
}
@Override
public String toString() {
return String.format("Master bedroom: %s", super.toString());
}
}
class GuestRoom extends Room {
GuestRoom() {
super(new Window(5, 6), 2);
}
@Override
public String toString() {
return String.format("Guest room: %s", super.toString());
}
}
class LivingRoom extends Room {
LivingRoom() {
super(new Window(6, 8), 5);
}
@Override
public String toString() {
return String.format("Living room: %s", super.toString());
}
}
TotalOrder.java
package hwk7;
import java.util.ArrayList;
import java.util.List;
// This class represents a collection of window orders using an
ArrayList
public class TotalOrder {
List orders = new ArrayList<>();
// Add a new window order to this list
// Make sure to merge the orders for window of the
same size
// Return the current object
TotalOrder add(WindowOrder newOrder) {
// TODO
}
// Add another collection of window order
// Also make sure that the orders for windows of the
same size are merged
// Return the current object
TotalOrder add(TotalOrder that) {
// TODO
}
// Multiple all window orders by "num"
TotalOrder times(int num) {
// TODO
}
@Override
public String toString() {
// TODO
}
}
Window.java
package hwk7;
public class Window {
private final int width, height;
public Window(int width, int height) {
this.width = width;
this.height = height;
}
public String toString() {
return String.format("%d X %d window", width, height);
}
public boolean equals(Object that) {
boolean ret = false;
if(that instanceof Window) {
Window thatWindow = (Window) that;
ret = width == thatWindow.width && height == thatWindow.height;
}
return ret;
}
}
class WindowOrder {
final Window window;
int num;
WindowOrder(Window window, int num) {
this.window = window;
this.num = num;
}
WindowOrder add (WindowOrder order) {
if(size.equals(order.size)) {
this.num += order.num;
}
return this;
}
WindowOrder times(int number) {
this.num *= number;
return this;
}
public String toString() {
return String.format("%d %s", num, size);
}
@Override
public boolean equals(Object that) {
if(that instanceof WindowOrder){
WindowOrder w= (WindowOrder)that;
return this.num==w.num &&this.size.equals(w.size);
}
return false;
}
}
Homework Answers
![Answer: Sample coding: Hwk7.java: public class Hwk7 public static void main(String[l args) Apartment[] apart = { new oneBedro](http://img.homeworklib.com/questions/e15a76d0-2d68-11ec-b72e-e79af4a867a0.png?x-oss-process=image/resize,w_560)
Editable code:
Sample coding:
Hwk7.java:
public class Hwk7
{
public static void main(String[] args)
{
Apartment[] apart = { new OneBedroom(20),
new TwoBedroom(15),
new ThreeBedroom(10) };
Apt_buildings building = new Apt_buildings(apart);
WindowOrder[] ords = building.ord();
System.out.println(building);
System.out.println("The window orders are: ");
for (WindowOrder order : ords)
{
System.out.println(order);
}
}
}
Apartment.java:
public class Apartment
{
int num_of_units;
Apt_rooms[] apt_rooms;
Apartment(int num_of_units, Apt_rooms[] apt_rooms)
{
this.num_of_units = num_of_units;
this.apt_rooms = apt_rooms;
}
WindowOrder[] oneUnitOrder()
{
WindowOrder[] ord = new WindowOrder[this.apt_rooms.length];
for (int i = 0; i < this.apt_rooms.length; i++)
{
ord[i] = this.apt_rooms[i].order();
}
return ord;
}
WindowOrder[] overallOrder()
{
WindowOrder[] ord = this.oneUnitOrder();
for (WindowOrder i : ord)
{
i.times(num_of_units);
}
return ord;
}
public String toString()
{
String[] parts = new String[this.apt_rooms.length];
for (int i = 0; i < parts.length; i++)
{
parts[i] = this.apt_rooms[i].toString();
}
return String.format("%d apartments with (%s)",
this.num_of_units,
String.join(")(", parts));
}
}
class OneBedroom extends Apartment
{
OneBedroom(int num_of_units)
{
super(num_of_units, new Apt_rooms[] { new LivingRoom(),
new MasterBedroom() });
}
}
class TwoBedroom extends Apartment
{
TwoBedroom(int num_of_units)
{
super(num_of_units, new Apt_rooms[] { new LivingRoom(),
new MasterBedroom(),
new GuestRoom() });
}
}
class ThreeBedroom extends Apartment
{
ThreeBedroom(int num_of_units)
{
super(num_of_units, new Apt_rooms[] { new LivingRoom(),
new MasterBedroom(),
new GuestRoom(),
new GuestRoom() });
}
WindowOrder[] orderForOneUnit()
{
Apt_rooms[] r = this.apt_rooms;
return new WindowOrder[] {
r[0].ord(),
r[1].ord(),
r[2].ord().add(r[3].ord())
};
}
}
Apt_buildings.java:
import java.util.ArrayList;
public class Apt_buildings
{
Apartment[] apart;
public Apt_buildings(Apartment[] apart)
{
this.apart = apart;
assert(this.apart.length > 0);
}
WindowOrder[] ord1()
{
ArrayList<WindowOrder> accumulator = new ArrayList<WindowOrder>();
for (Apartment apts : this.apart)
{
for (WindowOrder ord : apts.overallOrder())
{
boolean inAccumulator = false;
for (WindowOrder accumulated_Order : accumulator)
{
if (accumulated_Order.window.equals(ord.window))
{
accumulated_Order.add(ord);
inAccumulator = true;
break;
}
}
if (!inAccumulator)
{
accumulator.add(ord);
}
}
}
return accumulator.toArray(new WindowOrder[accumulator.size()]);
}
WindowOrder[] ord2()
{
WindowOrder[] accumulator = this.apart[0].overallOrder();
for (int i = 1; i < this.apart.length; i++)
{
WindowOrder[] current = this.apart[i].overallOrder();
for (int j = 0; j < current.length; j++)
{
boolean inAccumulator = false;
for (int k = 0; k < accumulator.length; k++)
{
if (accumulator[k].window.equals(current[j].window))
{
accumulator[k].add(current[j]);
inAccumulator = true;
break;
}
}
if (!inAccumulator)
{
WindowOrder[] newAccumulator = new WindowOrder[accumulator.length + 1];
for (int k = 0; k < accumulator.length; k++)
{
newAccumulator[k] = accumulator[k];
}
newAccumulator[accumulator.length] = current[j];
accumulator = newAccumulator;
}
}
}
return accumulator;
}
WindowOrder[] ord()
{
return ord1();
}
public String toString()
{
String s[] = new String[this.apart.length + 1];
for (int i = 0; i < this.apart.length; i++)
{
s[i] = this.apart[i].toString();
}
s[this.apart.length] = "";
return String.join("\n", s);
}
WindowOrder[] ords()
{
throw new UnsupportedOperationException("Not supported yet...");
}
}
Apt_rooms.java:
public class Apt_rooms
{
Apt_windows windows;
int num_of_windows;
Apt_rooms(Apt_windows windows, int num_of_windows)
{
this.windows = windows;
this.num_of_windows = num_of_windows;
}
WindowOrder order()
{
return new WindowOrder(windows, num_of_windows);
}
public String toString()
{
return String.format("%d (%s)", this.num_of_windows, this.windows);
}
public boolean equvalent(Object that)
{
if (this == that)
{
return true;
}
if (that instanceof Apt_rooms)
{
Apt_rooms ar = (Apt_rooms)that;
return this.windows.equals(ar.windows) &&
this.num_of_windows == ar.num_of_windows;
}
return false;
}
WindowOrder ord()
{
throw new UnsupportedOperationException("Not supported yet.");
}
}
class MasterBedroom extends Apt_rooms
{
MasterBedroom()
{
super(new Apt_windows(4, 6), 3);
}
public String toString()
{
return String.format("Master bedroom: %s", super.toString());
}
}
class GuestRoom extends Apt_rooms
{
GuestRoom()
{
super(new Apt_windows(5, 6), 2);
}
public String toString()
{
return String.format("Guest room: %s", super.toString());
}
}
class LivingRoom extends Apt_rooms
{
LivingRoom()
{
super(new Apt_windows(6, 8), 5);
}
public String toString()
{
return String.format("Living room: %s", super.toString());
}
}
Apt_windows.java:
public class Apt_windows
{
private final int win_width, win_height;
public Apt_windows(int win_width, int win_height)
{
this.win_width = win_width;
this.win_height = win_height;
}
public String toString()
{
return String.format("%d X %d window", this.win_width, this.win_height);
}
public boolean equvalent(Object that)
{
if (this == that)
{
return true;
}
if (that instanceof Apt_windows)
{
Apt_windows aw = (Apt_windows)that;
return this.win_width == aw.win_width &&
this.win_height == aw.win_height;
}
return false;
}
}
class WindowOrder
{
final Apt_windows window;
int num;
WindowOrder(Apt_windows window, int num)
{
this.window = window;
this.num = num;
}
WindowOrder add(WindowOrder ord)
{
if (this.window.equals(ord.window))
{
this.num += ord.num;
}
return this;
}
WindowOrder times(int number)
{
this.num *= number;
return this;
}
public String toString()
{
return String.format("%d %s", this.num, this.window);
}
public boolean equvalent(Object that)
{
if (this == that)
{
return true;
}
if (that instanceof WindowOrder)
{
WindowOrder wo = (WindowOrder)that;
return this.window.equals(wo.window) &&
this.num == wo.num;
}
return false;
}
}
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Templates
Apartment.java
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