The Stack Implementations With Array List 

 1 public class ArrayStack
 2 {
 3     private Object[] stack;
 4     
 5     private int top = -1;
 6     
 7     public ArrayStack(int size)
 8     {
 9         stack = new Object[size];
10     }
11     
12     public boolean add(Object data)
13     {
14         if(isFull() == true)
15         {
16             return false;
17         }
18         
19         stack[++ top] = data;
20         
21         return true;
22     }
23     
24     public Object get()
25     {
26         if(isEmpty() == true)
27         {
28             return null;
29         }
30         else
31         {
32             return stack[top --];
33         }
34     }
35     
36     public boolean isEmpty()
37     {
38         if(top == -1)
39         {
40             return true;
41         }
42         else
43         {
44             return false;
45         }
46     }
47     
48     public boolean isFull()
49     {
50         if(top == stack.length - 1)
51         {
52             return true;
53         }
54         else
55         {
56             return false;
57         }
58     }
59     
60 }

 

posted @ 2017-09-14 17:50  StringBuilder  阅读(89)  评论(0)    收藏  举报