class Node { public int data; public Node next;

public Node(int data) { this.data = data; this.next = null; } }

class LinkedList { private Node head; private Node tail; public LinkedList() { head = null; tail = null; } public void append(Node newNode) { /* Task 1: your solution goes here */ } public void printList() { Node node = head; while (node != null) { System.out.print(node.data + " "); node = node.next; } System.out.println(); } }

Question

Task 1. Please implement the function public void append(Node newNode) of class SinglyLinkedList. Add your solution after the comment "Task 1: your solution goes here"

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class Main { public static void main(String[] args) { LinkedList numList = new LinkedList(); /* Task 2: your solution goes here */

numList.printList(); }

}

QUESTION

Task 2. Test the public void append(Node newNode) function you implemented. In the main() function,

create a list object and append three nodes, 1, 2, and 3, in sequence.

Use the function public void printList() of class SinglyLinkedList to print out the result list.