נתונה המחלקה IntList הבאה:

public class IntList {
    private Node<int> head;
    public IntList( ) {
        head = null;
    }
    public void Add(int a) {
       head = new Node<int> (a, head);
    }
    public override string ToString(){
        string s = "{";
        Node<int> h = head;
        while(h.GetNext()!= null){
            s += h.GetValue()+",";
            h = h.GetNext();
        }
        return s + h.GetValue()+"}";
    }
    public  bool What1 (IntList list) {
        Node<int> h1 = head;
        Node<int> h2 = list.head;
        while ((h1 != null) && (h2 != null))  {
            if (h1.GetValue()!= h2.GetValue())
                return false;
            h1 = h1.GetNext();
            h2 = h2.GetNext();
        }
        return true;
    }
    public bool What2 (IntList list) {
        Node<int> h1 = head;
        while (h1 != null) {
            bool found = false;
            Node<int> h2 = list.head;
            while ((h2 != null) && (!found)) {
                if (h1.GetValue()== h2.GetValue())
                    found = true;
                h2 = h2.GetNext();
            }
            if (!found)
                return false;
            h1 = h1.GetNext();
        }
        return true;
    }
}