Lab 3 finished.

README.md

@@ -67,6 +67,8 @@ Once you finish the assignment, submit a URL link to your repository or your pul
 3. `IntArrayList` should store numbers in an array with a length of 10 by default. When the `add` method is called, you must first determine if the array is full. If it is, create a new array that is 50% larger, move all elements over to the new array and add the new element. (For example, an array of length 10 would be increased to 15.)
 4. `IntVector` should store numbers in an array with a length of 20 by default. When the `add` method is called, you must first determine if the array is full. If it is, create a new array that is double the size of the current array, move all elements over to the new array and add the new element. (For example, an array of length 10 would be increased to 20.)
 5. In your `README.md`, include an example of when `IntArrayList` would be more efficient and when `IntVector` would be more efficient.
+IntArrayList would be more efficient if array grows slowly and memory usage is important.
+IntVector would be more efficient if array grows fast and performance is more important than memory.
 
 <br>
 

src/Car.java

@@ -0,0 +1,15 @@
+public abstract class Car {
+    protected String vinNumber;
+    protected String make;
+    protected String model;
+    protected int mileage;
+    public Car(String vinNumber, String make, String model, int mileage) {
+        this.vinNumber = vinNumber;
+        this.make = make;
+        this.model = model;
+        this.mileage = mileage;
+    }
+    public String getInfo(){
+        return vinNumber + " " + make + " " + model + " " + mileage;
+    }
+}

src/IntArrayList.java

@@ -0,0 +1,29 @@
+public class IntArrayList implements IntList{
+    private int[] data;
+    private int size;
+
+    public IntArrayList() {
+        data = new int[10];
+        size = 0;
+    }
+    @Override
+    public void add(int number) {
+        if (size == data.length) {
+            int[] newData = new int[data.length + size / 2];
+            for (int i = 0; i < data.length; i++) {
+                newData[i] = data[i];
+            }
+            data = newData;
+        }
+
+        data[size] = number;
+        size++;
+    }
+    @Override
+    public int get(int id) {
+        if (id < 0 || id >= size) {
+            throw new ArrayIndexOutOfBoundsException("Invalid index");
+        }
+        return data[id];
+    }
+}

src/IntList.java

@@ -0,0 +1,4 @@
+public interface IntList {
+    void add(int number);
+    int get(int id);
+}

src/IntVector.java

@@ -0,0 +1,27 @@
+public class IntVector implements IntList{
+    private int[] data;
+    private int size;
+    public IntVector(){
+        data = new int[20];
+        size = 0;
+    }
+    @Override
+    public void add(int number) {
+        if (size == data.length) {
+            int[] newData = new int[data.length*2];
+            for(int i = 0; i < data.length; i++){
+                newData[i] = data[i];
+            }
+            data = newData;
+        }
+        data[size] = number;
+        size++;
+    }
+    @Override
+    public int get(int id) {
+        if (id < 0 || id >= size) {
+            throw new ArrayIndexOutOfBoundsException("Invalid index");
+        }
+        return data[id];
+    }
+}

src/Movie.java

@@ -0,0 +1,14 @@
+public class Movie extends Video {
+    private double rating;
+    public Movie(String title, int duration, double rating) {
+        super(title, duration);
+        this.rating = rating;
+    }
+    public double getRating() {
+        return rating;
+    }
+    @Override
+    public String getInfo() {
+        return "Type: Movie " + super.getInfo() + " Rating :" + rating;
+    }
+}

src/Sedan.java

@@ -0,0 +1,10 @@
+public class Sedan extends Car {
+    public Sedan(String vinNumber, String make, String model, int mileage) {
+        super(vinNumber, make, model, mileage);
+    }
+
+    @Override
+    public String getInfo() {
+        return "Sedan: " + super.getInfo();
+    }
+}

src/Truck.java

@@ -0,0 +1,14 @@
+public class Truck extends Car{
+    private double towingCapacity;
+    public Truck(String vinNumber, String make, String model, int mileage, double towingCapacity){
+        super(vinNumber, make, model, mileage);
+        this.towingCapacity = towingCapacity;
+    }
+    public double getTowingCapacity(){
+        return towingCapacity;
+    }
+    @Override
+    public String getInfo() {
+        return "Truck: " + super.getInfo() + " Towing capacity: " + towingCapacity;
+    }
+}

src/TvSeries.java

@@ -0,0 +1,14 @@
+public class TvSeries extends Video{
+    private int episodes;
+    public TvSeries(String title, int duration, int episodes) {
+        super(title, duration);
+        this.episodes = episodes;
+    }
+    public int getEpisodes() {
+        return episodes;
+    }
+    @Override
+    public String getInfo() {
+        return "Type: Tv series " + super.getInfo() + " Episode count :" + episodes;
+    }
+}

src/UtilityVehicle.java

@@ -0,0 +1,14 @@
+public class UtilityVehicle extends Car{
+    public boolean fourWheelDrive;
+    public UtilityVehicle(String vinNumber, String make, String model, int mileage, boolean fourWheelDrive){
+        super(vinNumber, make, model, mileage);
+        this.fourWheelDrive = fourWheelDrive;
+    }
+    public boolean isFourWheelDrive(){
+        return this.fourWheelDrive;
+    }
+    @Override
+    public String getInfo(){
+        return "Utility Vehicle: " + super.getInfo() + " Four Wheel Drive: " + fourWheelDrive;
+    }
+}

src/Video.java

@@ -0,0 +1,11 @@
+public abstract class Video{
+    protected String title;
+    protected int duration;
+    public Video(String title, int duration) {
+        this.title = title;
+        this.duration = duration;
+    }
+    public String getInfo(){
+        return title + " " + duration;
+    }
+}