Terminado

BigDecimalProject.java

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+package Exercise1;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+
+public class BigDecimalProject {
+
+    public static double roundToCent(BigDecimal number) {
+        BigDecimal rounded = number.setScale(2, RoundingMode.HALF_UP);
+        return rounded.doubleValue();
+    }
+    public static BigDecimal invertAndRoundToTenth(BigDecimal number) {
+        BigDecimal inverted = number.negate();
+        return inverted.setScale(1, RoundingMode.HALF_UP);
+    }
+
+    public static void main(String[] args) {
+        BigDecimal number = new BigDecimal("4.2545");
+        System.out.println(roundToCent(number));
+
+        BigDecimal number1 = new BigDecimal("1.2345");
+        BigDecimal number2 = new BigDecimal("-45.67");
+        System.out.println(invertAndRoundToTenth(number1));
+        System.out.println(invertAndRoundToTenth(number2));
+    }
+}

Car.java

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+package Exercise2;
+
+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: " + vinNumber + ", Make: " + make + ", Model: " + model + ", Mileage: " + mileage + " miles";
+    }
+}

IntArrayList.java

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+package Exercise4;
+import java.util.Arrays;
+
+public class IntArrayList implements IntList {
+    private int[] array;
+    private int size;
+
+    public IntArrayList() {
+        array = new int[10];
+        size = 0;
+    }
+    @Override
+    public void add(int number) {
+        if (size == array.length) {
+            int newSize = array.length + (array.length / 2);
+            int[] newArray = new int[newSize];
+            System.arraycopy(array, 0, newArray, 0, array.length);
+            array = newArray;
+        }
+        array[size++] = number;
+    }
+    @Override
+    public int get(int id) {
+        if (id < 0 || id >= size) {
+            throw new IndexOutOfBoundsException("Index: " + id + ", Size: " + size);
+        }
+        return array[id];
+    }
+}

IntList.java

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+package Exercise4;
+
+public interface IntList {
+    void add(int number);
+    int get(int id);
+}

IntVector.java

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+package Exercise4;
+import java.util.Arrays;
+
+public class IntVector implements IntList {
+    private int[] array;
+    private int size;
+
+    public IntVector() {
+        array = new int[20];
+        size = 0;
+    }
+    @Override
+    public void add(int number) {
+        if (size == array.length) {
+            int newSize = array.length * 2;
+            int[] newArray = new int[newSize];
+            System.arraycopy(array, 0, newArray, 0, array.length);
+            array = newArray;
+        }
+        array[size++] = number;
+    }
+    @Override
+    public int get(int id) {
+        if (id < 0 || id >= size) {
+            throw new IndexOutOfBoundsException("Index: " + id + ", Size: " + size);
+        }
+        return array[id];
+    }
+}

Main.java

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+package Exercise4;
+
+public class Main {
+    public static void main(String[] args) {
+        IntList intArrayList = new IntArrayList();
+        for (int i = 0; i < 15; i++) {
+            intArrayList.add(i);
+            System.out.println("IntArrayList add: " + i);
+        }
+
+        System.out.println("Elementos en IntArrayList:");
+        for (int i = 0; i < 15; i++) {
+            System.out.println("Elemento en posición " + i + ": " + intArrayList.get(i));
+        }
+
+        IntList intVector = new IntVector();
+        for (int i = 0; i < 25; i++) {
+            intVector.add(i);
+            System.out.println("IntVector add: " + i);
+        }
+
+        System.out.println("Elementos en IntVector:");
+        for (int i = 0; i < 25; i++) {
+            System.out.println("Elemento en posición " + i + ": " + intVector.get(i));
+        }
+    }
+}

Movie.java

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+package Exercise3;
+
+public class Movie extends Video {
+    private double rating;
+
+    public Movie(String title, int duration, double rating) {
+        super(title, duration);
+        this.rating = rating;
+    }
+
+    @Override
+    public String getInfo() {
+        return super.getInfo() + ", Rating: " + rating;
+    }
+}