the following piece of code. (The numbers on the left margin denote line numbers.) line# 01 class LL_node { 02 int val; 03 LL_node next; 04 public LL_node (int n) { 05 val = n; 06 next = null; 07 } 08 public void set_next (LL_node nextNode) { 09 next = nextNode; 10 } 11 public LL_node get_next () { 12 return next;
Consider the following piece of code. (The numbers on the left margin denote line numbers.)
line#
01 class LL_node {
02 int val;
03 LL_node next;
04 public LL_node (int n) {
05 val = n;
06 next = null;
07 }
08 public void set_next (LL_node nextNode) {
09 next = nextNode;
10 }
11 public LL_node get_next () {
12 return next;
13 }
14 public void set_value (int input) {
15 val = input;
16 }
17 public int get_value () {
18 return val;
19 }
20 }
21 public class LL {
22 protected LL_node head;
23 protected LL_node tail;
24 public LL () {
25 head = null;
26 tail = null;
27 }
28 public int append (int n) {
29 if (head == null) {
30 head = new LL_node(n);
31 tail = head;
32 } else {
33 LL_node new_node;
34 new_node = new LL_node(n);
35 tail.set_next (new_node);
36 tail = new_node;
37 }
38 return n;
39 }
40 }
which the following statement is true (it can be more than one of the statements could be true.
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