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 full() {
	return numItems>=data.length;
    }

    public void grow() {
	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 (full()) {
	    grow();
	}
	data[numItems]=d;
	numItems=numItems+1;
    }
    
    public String toString() {
	String s =Arrays.toString(data)+" --- " +numItems;
	return s;
    }

    public void insert(int pos, int d) {
	if (pos>=numItems)
	    add(d);
	else {
	    if (full())
		grow();
            for(int i = numItems; i>pos; i--){
                data[i] = data[i-1];
	    }
	    data[pos] = d;
	    numItems++;
	}
    }
}