Test_21_1

public class Test_21_1<E> {
    private int pos = 0;
    E array1[] , array2[];

    public int getSize(){
        if(array1.length < array2.length)
        return array2.length;
        else return array1.length;
    }

    public E peek(){
        // return the top value
        if(array1.length < array2.length)
        return array2[pos];
        else return array1[pos];
    }

    public void push(E o){
        //add element
        if(pos < getSize() - 1)
            array[pos] = o;
        else
        {

            System.arraycopy(array,0,array1,0,getSize());
            array1[pos] = o;
        }
        pos++;
    }

    public E pop(){
        //return and remove the top element
        return
    }

    public E isEmpty(){

    }
    public static void main(String[] args) {
        // TODO Auto-generated method stub

    }

}