Examen JAVA 2014

// QCM: a, c, a, ab, a, b, a, a, a, b', a, c, a, a'

// ex2

public class Complex {

 // Variables d'instance
 private double real, imag;
 // Constructeur
 public Complex (double r, double i) {
     this.real = r;
     this.imag = i;
 }
 // Partie réelle
 public double getRealPart() {
     return real;
 }
 // Partie imaginaire
 public double getImagPart(){
     return imag;
 }
 // Additionner deux complexes
 public Complex add (Complex c) {
     return new Complex(this.real + c.getRealPart(), this.imag + c.getImagPart());
 }
 // Soustraire deux complexes
 public Complex subtract (Complex c) {
     return new Complex(this.real - c.getRealPart(), this.imag - c.getImagPart());
 }
 // Calculer le conjugué
 public Complex conjugate() {
     return new Complex(this.real, -this.imag);
 }

    public static void main(String args[]) {
        Complex a = new Complex(2.5, 1);
        Complex b = new Complex(1, 1.5);

        Complex c = a.add(b);
        double r = c.getRealPart();
        double i = c.getImagPart();

        System.out.println(r+" + "+i+"i");

        Complex d = c.conjugate().subtract(b);
        System.out.println(d.getRealPart()+" + "+d.getImagPart()+"i");
    }
}

// ex3

public class Pawn extends ChessPiece {

    public Pawn(int color, int row, int col) {
        super(color, row, col);
    }

    @Override
    public int[][] getMoves() {
        int[][] T = new int[1][2];
        T[0][1] = col; // wont change as long as we ignore other pieces

        if(super.color == BLACK && row < 7)
            T[0][0] = row + 1;

        else if(super.color == WHITE && row > 0)
            T[0][0] = row - 1;
        else
            T[0][0] = row;

        return T;
    }

    public static void main(String args[]) {
        Pawn pion = new Pawn(BLACK, 4, 2);
                int[][] moves = pion.getMoves();
        System.out.print(moves [0][0] + " " + moves[0][1]);
    }
}

// ex4

import java.util.Scanner;

public class Voyelles{
    public static void main (String args[]){
        Scanner sc = new Scanner(System.in);
        String str = sc.nextLine();
        char[] T = {'a', 'e', 'i', 'o', 'u', 'y'};
        int[] cpt = new int[6];
        for ( int i=0 ; i<str.length() ; i++ )
        {
            for( int j=0 ; j<T.length ; j++)
                if(str.toLowerCase().charAt(i) == T[j])
                    cpt[j]++;
        }

        for(int i=0; i<T.length ; i++)
            System.out.println(cpt[i] + " fois la lettre " + T[i]);

    }
}

// ex5

    JFrame -> Frame -> Window -> Container -> Component -> Object