示例#1
0
  public static void main(String[] args) {
    String[] elementArray = {"sway", "and", "twist", "stacks", "tall"}; // (1)
    System.out.println("Array of elements: " + Arrays.toString(elementArray));

    // Using ArrayDeque as a stack:                                             (2)
    ArrayDeque<String> stack = new ArrayDeque<String>();
    for (String string : elementArray) stack.push(string); // (3) Push elements.
    System.out.println("Stack before: TOP->" + stack + "<-BOTTOM");
    System.out.print("Popping stack: ");
    while (!stack.isEmpty()) { // (4)
      System.out.print(stack.pop() + " "); // (5) Pop elements.
    }
    System.out.println("\n");

    // Using ArrayDeque as a FIFO queue:                                        (6)
    elementArray = new String[] {"Waiting", "in", "queues", "is", "boring"}; // (7)
    System.out.println("Array of elements: " + Arrays.toString(elementArray));
    ArrayDeque<String> fifoQueue = new ArrayDeque<String>();
    for (String string : elementArray) fifoQueue.offerLast(string); // (8) Insert at tail.
    System.out.println("Queue before: HEAD->" + fifoQueue + "<-TAIL");
    System.out.print("Polling queue: ");
    while (!fifoQueue.isEmpty()) { // (9)
      String string = fifoQueue.pollFirst(); // (10) Remove from head.
      System.out.print(string.toUpperCase() + " ");
    }
    System.out.println();
  }
示例#2
0
  public static void main(String[] args) {

    // Aquesta estructura és perquè carreguis els objectes amb el mètode
    // correspondent
    // Tots alhora.

    ArrayList<Animal> LlistaInicial = new ArrayList<Animal>(11);
    LlistaInicial.add(new Animal(32, "frisona", 412.3, 4, 2.71));
    LlistaInicial.add(new Animal(22, "frisona", 472.3, 4, 2.71));
    LlistaInicial.add(new Animal(82, "pirineu", 422.1, 4, 2.91));
    LlistaInicial.add(new Animal(51, "pirineu", 438.1, 4, 2.91));
    LlistaInicial.add(new Animal(28, "pirineu", 399.5, 4, 2.91));
    LlistaInicial.add(new Animal(393, "potablava", 3.55, 2, 1.55));
    LlistaInicial.add(new Animal(394, "potablava", 3.85, 2, 1.55));
    LlistaInicial.add(new Animal(398, "potablava", 3.39, 2, 1.55));
    LlistaInicial.add(new Animal(441, "potablava", 3.45, 2, 1.55));
    LlistaInicial.add(new Animal(394, "empordanesa", 3.95, 2, 1.17));
    LlistaInicial.add(new Animal(398, "empordanesa", 3.41, 2, 1.17));

    // Declara les cues aquí
    ArrayDeque<Animal> lifoAnimal = new ArrayDeque<Animal>();
    ArrayDeque<Animal> fifoAnimal = new ArrayDeque<Animal>();

    // Afegeix els elements de la llista a les dues cues aquí:
    for (int i = 0; i < LlistaInicial.size(); i++) {
      lifoAnimal.offerFirst(LlistaInicial.get(i));
      fifoAnimal.offerLast(LlistaInicial.get(i));
    }

    Animal mostra = new Animal();

    // Imprimeix la cua LIFO
    System.out.println("Cua LIFO");
    while (!lifoAnimal.isEmpty()) {
      System.out.println(lifoAnimal.pollFirst());
    }

    // Sysout comú per mostrar l'animal per "mostrar"
    System.out.println(mostra);

    // Imprimeix la cua LIFO
    System.out.println("Cua FIFO");
    while (!fifoAnimal.isEmpty()) {
      System.out.println(fifoAnimal.pollFirst());
    }
  }