// A ListNode represents a single node in a linked list. It stores an
// integer
// value and a link to the next node.
public class ListNode<E> {
    public E data;
    public ListNode<E> next;

    // Creates a ListNode with the specified integer data and next node.
    public ListNode(E data, ListNode next) {
        this.data = data;
        this.next = next;
    }
}