Java Using Nodes with LinkedList

Java Using Nodes with LinkedList

By : Glorfindelrb
Date : November 17 2020, 11:58 AM
This might help you You don't actually need a separate LinkedList class; the ListNode class is a linked list. Or, to state it differently, a reference to the head of the list is a reference to the list.
The use of head, tail, current, prev in the sample code you posted has come from a double-linked list which is a data type that has links in both directions. This is more efficient for certain types of applications (such as finding the nth last item).
code :
class LinkedList<E> {

    private LinkedList(E value, LinkedList<E> tail) {
        this.data = value;
        this.tail = tail;

    public LinkedList<E> prependItem(E item) {
        return new LinkedList(item, this);
private LinkedList(E value) {
    this.data = value;
    this.tail = null;

public void appendItem(E item) {
    LinkedList<E> list = this;
    while (list.tail != null)
        list = list.tail;
    list.tail = new LinkedList<>(item);
public int getLength(LinkedList list) {
    if (list == null) {
        return 0;
    } else {
        return 1 + getLength(list.getTail());
public LinkedList getTailOfListOfLengthN(LinkedList list, int n) {
    int length = getLength(list);
    if (length < n) {
        return null;
    } else if (length == n) {
        return list;
    } else {
        return getTailOfLengthN(list.getTail(), n);
public LinkedList<E> reverse() {
    if (tail == null) {
        return this;
    } else {
        LinkedList<E> list = reverse(tail);
        tail.tail = this;
        tail = null;
        return list;

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code to reverse alternate nodes in a linkedlist in java

code to reverse alternate nodes in a linkedlist in java

By : Vignesh Chandran
Date : March 29 2020, 07:55 AM
I wish did fix the issue. You need to swap two elements (if there are at least two in the list) then proceed to the next pair.
Your approach currently does this: 1) go to the very end of the list (via front-recursion), then 2) swap elements as you go toward the front of the list (as you go up the recursive call chain). The result of this is to reverse the list
Java Nodes LinkedList

Java Nodes LinkedList

By : Magentician
Date : March 29 2020, 07:55 AM
will be helpful for those in need Java Nodes/ LinkedList(Pointer based) the program is basically a node that includes student attributes: , Make your class generic :
code :
public class NodeF14<T>
  NodeF14<T> next;
  T data;
Student student = new Student (firstName,lastName);
NodeF14<Student> studentNode = new NodeF14<Student> (student);
Java LinkedList adding multiple nodes

Java LinkedList adding multiple nodes

By : Mohirul Abedin Riku
Date : March 29 2020, 07:55 AM
Does that help A couple of points, mostly summarizing the comments:
You shouldn't work with ListNode objects in main() at all - that should be the job of the SinglyLinkedList class. ListNode doesn't even need to be visible to the rest of the code, it could be a nested class in SinglyLinkedList. You should only be exchanging the data objects (Strings in this case) with SinglyLinkedList.
code :
SinglyLinkedList<String> list = new SinglyLinkedList<String>();
static <E> void addToList(SinglyLinkedList<E> list, E... values) {
    for (E value : values) {
SinglyLinkedList<String> list = new SinglyLinkedList<String>();
addToList(list, "first", "second", "third");
Java LinkedList keep reference to nodes and add

Java LinkedList keep reference to nodes and add

By : RobertP
Date : March 29 2020, 07:55 AM
it should still fix some issue I think it is not possible, and you should be using ConcurrentLinkedDeque.
JVM is sufficiently optimized that there won't be much of performance hit, and it advertises just that:
java- understanding LinkedList interview questions with nodes

java- understanding LinkedList interview questions with nodes

By : apsg
Date : March 29 2020, 07:55 AM
hop of those help? This has nothing to do with the Java built-in LinkedList, except in concept.
One of the things they teach in Programming 101 (or whatever it's called), is how linked lists in general work.
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