import java.util.Iterator;
import java.util.NoSuchElementException;

public class TRAI_24_X7_skeleton<E> implements TRAI_24_X7<E> {
    //                    ^^^^^
    //                own userid here

    /**
     * SELF-EVALUATION HERE:
     *
     *
     *
     */


    /**
     * Adds an element to tail of the queue.
     *
     * @param x element to add
     * @return true
     */
    @Override
    public boolean add(E x) {
        return false;
    }

    /**
     * Removes and returns the head of the queue
     *
     * @return element that was removed
     * @throws NoSuchElementException if queue was empty
     */
    @Override
    public E remove() {
        return null;
    }

    /**
     * Is queue empty or not?
     *
     * @return true if queue is empty, false otherwise
     */
    @Override
    public boolean isEmpty() {
        return false;
    }

    /**
     * Returns an iterator over elements of type {@code T}.
     *
     * This is for task 32.
     * But keep this when submitting task X7
     * It is not tested in X7.
     *
     * @return an Iterator.
     */
    @Override
    public Iterator<E> iterator() {
        return null;
    }
}