final lab 2

Main.java

@@ -0,0 +1,336 @@
+
+// EJERCICIO 1 -------------------------------------
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+public class BigDecimalUtils {
+
+    public static BigDecimal invertSignAndRoundToNearestTenth(BigDecimal number) {
+        BigDecimal inverted = number.negate();
+        BigDecimal rounded = inverted.setScale(1, RoundingMode.HALF_UP);
+
+        return rounded;
+    }
+    public static void main(String[] args) {
+        BigDecimal num1 = new BigDecimal("1.2345");
+        BigDecimal num2 = new BigDecimal("-45.67");
+
+        BigDecimal result1 = invertSignAndRoundToNearestTenth(num1);
+        BigDecimal result2 = invertSignAndRoundToNearestTenth(num2);
+
+        System.out.println("(1.2345): " + result1);
+        System.out.println("(-45.67): " + result2);
+    }
+}
+
+
+import java.math.BigDecimal;
+import  java.math.RoundingMode;
+
+public class BigDecimalUtils {
+
+    public static double roundToNearestHundredth(BigDecimal number) {
+        BigDecimal rounded = number.setScale(2, RoundingMode.HALF_UP);
+        return rounded.doubleValue();
+    }
+
+    public static void main(String[] args) {
+        BigDecimal num = new BigDecimal("4.2545");
+        double result = roundToNearestHundredth(num);
+        System.out.println(result);
+    }
+}
+
+
+// EJERCICIO 2 -------------------------------------------
+
+
+public abstract class Car {
+
+    private String make;
+    private String model;
+    private int mileage;
+    private String vinNumber;
+
+    public Car(String make, int mileage, String model) {
+        this.make = make;
+        this.mileage = mileage;
+        this.model = model;
+    }
+
+    public Car(String vinNumber, String make, String model, int mileage) {
+
+    }
+
+    public String getVinNumber() {
+        return vinNumber;
+    }
+
+    public String getMake() {
+        return make;
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public int getMileage() {
+        return mileage;
+    }
+
+    public abstract String getAdditionalInfo();
+
+    public String getInfo() {
+        return "VIN: " + vinNumber + "\n" +
+                "Marca: " + make + "\n" +
+                "Modelo: " + model + "\n" +
+                "Kilometraje: " + mileage + "km\n" +
+                getAdditionalInfo();
+
+    }
+}
+
+
+//------------------------------------------------------------------
+
+public class Sedan extends Car {
+
+    public Sedan(String vinNumber, String make, String model, int mileage) {
+
+        super(vinNumber, mileage, model);
+    }
+
+
+    public String getAdditionalInfo() {
+        return "Tipo: Sedan";
+    }
+}
+
+
+// --------------------------------------------------------------------
+
+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;
+    }
+
+    public void setTowingCapacity(double towingCapacity) {
+        this.towingCapacity = towingCapacity;
+    }
+
+    public String getAdditionalInfo(){
+        return "Tipo: Truck\n" +
+                "Capacidad del remolque: " + towingCapacity + " kg ";
+
+    }
+}
+
+
+//---------------------------------------------------------------------
+
+public class UtilityVehicle extends Car {
+    private 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 fourWheelDrive;
+    }
+
+    public void setFourWheelDrive(boolean fourWheelDrive) {
+        this.fourWheelDrive = fourWheelDrive;
+    }
+
+    public String getAdditionalInfo() {
+        return "Tipo: Utility Vehicle\n" +
+                "Traccion en las cuatro ruedas: " + (fourWheelDrive ? "Si" : "No");
+    }
+}
+
+
+//--------------------------------------------------------------
+
+public class Main {
+    public static void main(String[] args) {
+        Sedan sedan = new Sedan("1HGBH41JXMN109186", "Toyota", "Camry", 50000);
+        UtilityVehicle suv = new UtilityVehicle("2HGCM82633A123456", "Honda", "CR-V", 30000, true);
+        Truck truck = new Truck("1FTFW1EF5EKE47198", "Ford", "F-150", 25000, 5000.0);
+
+        System.out.println(sedan.getInfo());
+        System.out.println(suv.getInfo());
+        System.out.println(truck.getInfo());
+    }
+}
+
+
+//EJERCICIO 3 -------------------------------------------------------
+
+
+public abstract class Video {
+    private String title;
+    private int duration;
+
+    public Video(String title, int duration) {
+        this.title = title;
+        this.duration = duration;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public int getDuration() {
+        return duration;
+    }
+    public abstract String getAdditionalInfo();
+    public String getInfo() {
+        return "Título: " + title + "\n" +
+                "Duración: " + duration + " minutos\n" +
+                getAdditionalInfo();
+    }
+}
+
+
+//--------------------------------------------------------------
+
+
+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;
+    }
+
+    public void setEpisodes(int episodes) {
+        this.episodes = episodes;
+    }
+
+    public String getAdditionalInfo() {
+        return "Episodios: " + episodes;
+    }
+}
+
+
+//----------------------------------------------------------
+
+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;
+    }
+    public void setRating(double rating) {
+        this.rating = rating;
+    }
+    public String getAdditionalInfo() {
+        return "Calificación: " + rating;
+    }
+}
+
+//-------------------------------------------------
+
+public class Main {
+    public static void main(String[] args) {
+        TvSeries tvSeries = new TvSeries("Breaking Bad", 3000, 62);
+        Movie movie = new Movie("Inception", 148, 8.8);
+
+        System.out.println(tvSeries.getInfo());
+        System.out.println(movie.getInfo());
+    }
+}
+
+//EJERCICIO 4 -------------------------------------------------------
+
+public interface IntList{
+    void add(int number);
+    int get(int index);
+}
+
+//----------------------------------------------------------------
+
+public class IntArrayList  implements IntList {
+    private int[] array;
+    private int size;
+
+    public IntArrayList(){
+        array = new int[10];
+        size = 0;
+    }
+
+    public void add(int number) {
+        if (size == array.length) {
+            int newLegth = array.length + (array.length / 2);
+            int[] newArray = new int[newLegth];
+            System.arraycopy(array, 0, newArray, 0, array.length);
+            array = newArray;
+        }
+
+        array[size] = number;
+        size++;
+    }
+
+    public int get(int index) {
+        if (index < 0 || index >= size) {
+            throw new IndexOutOfBoundsException("Indice fuera de rango: " + index);
+        }
+
+        return array[index];
+
+    }
+
+}
+
+public int size() {
+    return size;
+}
+}
+
+//----------------------------------------------------
+
+
+public class Main {
+    public static void main(String[] args) {
+        IntList arrayList = new IntArrayList();
+        IntList vector = new IntVector();
+        for (int i = 0; i < 15; i++) {
+            arrayList.add(i);
+        }
+
+        for (int i = 0; i < 25; i++) {
+            vector.add(i);
+        }
+
+        System.out.println("Elementos de IntArrayList:");
+        for (int i = 0; i < arrayList.size(); i++) {
+            System.out.print(arrayList.get(i) + " ");
+        }
+        System.out.println();
+
+        System.out.println("Elementos de IntVector:");
+        for (int i = 0; i < vector.size(); i++) {
+            System.out.print(vector.get(i) + " ");
+        }
+        System.out.println();
+    }
+}
+