Piles/Pile.java

   1
   2 class Pile {
   3     private int int_array[];
   4     private int array_size;
   5     private int stack_head_index;
   6
   7     private void setSize(int size) {
   8         array_size = size;
   9     }
  10
  11     private int getSize() {
  12         return array_size;
  13     }
  14
  15     private void setHeadIndex(int index) {
  16         stack_head_index = index;
  17     }
  18
  19     private int getHeadIndex() {
  20         return stack_head_index;
  21     }
  22
  23     Pile(int size) {
  24         int_array = new int[size];
  25         setSize(size);
  26         setHeadIndex(0);
  27     }
  28
  29     public void empiler(int value) {
  30         if (!plein()) {
  31             int_array[stack_head_index] = value;
  32             stack_head_index++;
  33         } else {
  34             System.out.println("La pile est pleine");
  35         }
  36     }
  37
  38     public int depiler() {
  39         if (!vide()) {
  40             stack_head_index--;
  41             return int_array[stack_head_index];
  42         } else {
  43             return -1;
  44         }
  45     }
  46
  47     public boolean plein() {
  48         return (getHeadIndex() >= getSize());
  49     }
  50
  51     public boolean vide() {
  52         return (getHeadIndex() == 0);
  53     }
  54
  55     public void afficher() {
  56         for (int i = 0; i < getSize(); i++) {
  57             System.out.println("element " + i + " " + int_array[i]);
  58         }
  59     }
  60
  61     public static void main(String[] args) {
  62         Pile stack = new Pile(5);
  63
  64         stack.empiler(3);
  65         stack.empiler(5);
  66         stack.empiler(4);
  67         stack.empiler(7);
  68         stack.empiler(8);
  69
  70         stack.afficher();
  71
  72         System.out.println("stack index " + stack.getHeadIndex());
  73         System.out.println("stack head value " + stack.depiler());
  74         System.out.println("stack index " + stack.getHeadIndex());
  75         System.out.println("stack head value " + stack.depiler());
  76         System.out.println("stack index " + stack.getHeadIndex());
  77         System.out.println("stack head value " + stack.depiler());
  78         System.out.println("stack index " + stack.getHeadIndex());
  79         System.out.println("stack head value " + stack.depiler());
  80         System.out.println("stack index " + stack.getHeadIndex());
  81         System.out.println("stack head value " + stack.depiler());
  82         System.out.println("stack index " + stack.getHeadIndex());
  83         System.out.println("stack head value " + stack.depiler());
  84         System.out.println("stack index " + stack.getHeadIndex());
  85
  86         stack.afficher();
  87     }
  88 }