打印顺序表

public class test8 {

    public static void main(String[] args) {
      test81 my = new test81();
      my.add(0,10);
      my.add(1,20);
      my.add(2,30);
      my.add(3,40);
      my.add(6,50);
      my.display();
    }
}

 1 import javax.xml.bind.annotation.XmlType;
 2 
 3 public class test81 {
 4     public int[] elem;
 5     public int usedSize;
 6 
 7     public static final int DEFAULT_SIZE = 10;//设置默认容量
 8     public test81 () {
 9         this.elem = new int[DEFAULT_SIZE];
10         this.usedSize = 0;
11     }
12     //打印顺序列表
13     public void display() {
14         for (int i = 0; i < usedSize; i++) {
15             System.out.println(this.elem[i] + " ");
16         }
17         System.out.println();
18     }
19     // 在 pos 位置新增元素
20     public void add(int pos, int data) {
21         if (isFull()) {
22             System.out.println("顺序表已经满了");
23             return;
24         }
25         if(pos<0 || pos>usedSize){
26             System.out.println("pos位置不合法");
27         }
28         else {
29             for (int i = this.usedSize-1; i > pos ; i--) {
30                this.elem[i+1] = this.elem[i];
31             }
32             this.elem[pos] = data;
33             this.usedSize++;
34         }
35     }
36     public boolean isFull() {
37         if(usedSize == this.elem.length) {
38             return true;
39         }
40         return false;
41     }
42 }