myList.java

import java.io.*;
import java.util.*;
public class myList {

    private int[] data;
    private int numItems;
    
    public myList()
    {
	data =new int[10];
	numItems=0;
    }
    
     public boolean isFull() {
	return numItems >= data.length;
    }

    public void grow() {
	    // "grow" the array by creating a new one and copying over
	    int[] tmpArray = new int[data.length+data.length/2];
	    for (int i=0;i<data.length;i++) 
		tmpArray[i]=data[i];
	    data = tmpArray;
    }

    public void add(int d) {
	if (isFull()){
	    grow();
	}
        data[numItems]=d;
        numItems = numItems + 1;
    }
	
	//insert an element d at pos
	public void insert(int pos, int d) {
	int last = data[data.length - 1];
	for (int i = data.length - 1; i > pos; i--) {
	data[i] = data[i - 1];}
	data[pos] = d;
	numItems = numItems + 1;
	}
	
	//remove an element at pos
	public void remove(int pos) {
	for (int i = pos; i < data.length - 1; i++) {
		data[i] = data[i + 1]; 
		}
	data[data.length - 1] = 0;
	numItems = numItems - 1;
	}
	
	public int size() { 
		return numItems;
	}
	
	public int get(int pos) {
		return data[pos];
	}
	
	public void set(int pos, int d) {
		data[pos] = d;
	}
}