Joseph  Murray

Joseph Murray

1630332025

Exploring LinkedList in Java

This is going to be a different article as my assumption after testing some on my machine turned out to be slightly wrong.

TL;DR

Use ArrayList in most standard cases where you simply add to the list and later on iterate over it. It will save you both time and memory.
Note that this article does not discuss the complexities of some of their operations where we know one or the other would perform substantially better .

#Java #linkedlist 

Exploring LinkedList in Java
Dylan  Iqbal

Dylan Iqbal

1628758468

JavaScript Algorithms and Data Structures: Doubly Linked List

In computer science, a doubly linked list is a linked data structure that consists of a set of sequentially linked records called nodes. Each node contains two fields, called links, that are references to the previous and to the next node in the sequence of nodes. The beginning and ending nodes' previous and next links, respectively, point to some kind of terminator, typically a sentinel node or null, to facilitate the traversal of the list. If there is only one sentinel node, then the list is circularly linked via the sentinel node. It can be conceptualized as two singly linked lists formed from the same data items, but in opposite sequential orders.

Doubly Linked List

The two node links allow traversal of the list in either direction. While adding or removing a node in a doubly linked list requires changing more links than the same operations on a singly linked list, the operations are simpler and potentially more efficient (for nodes other than first nodes) because there is no need to keep track of the previous node during traversal or no need to traverse the list to find the previous node, so that its link can be modified.

Pseudocode for Basic Operations

Insert

Add(value)
  Pre: value is the value to add to the list
  Post: value has been placed at the tail of the list
  n ← node(value)
  if head = ø
    head ← n
    tail ← n
  else
    n.previous ← tail
    tail.next ← n
    tail ← n
  end if
end Add

Delete

Remove(head, value)
  Pre: head is the head node in the list
       value is the value to remove from the list
  Post: value is removed from the list, true; otherwise false
  if head = ø
    return false
  end if
  if value = head.value
    if head = tail
      head ← ø
      tail ← ø
    else
      head ← head.next
      head.previous ← ø
    end if
    return true
  end if
  n ← head.next
  while n != ø and value !== n.value
    n ← n.next
  end while
  if n = tail
    tail ← tail.previous
    tail.next ← ø
    return true
  else if n != ø
    n.previous.next ← n.next
    n.next.previous ← n.previous
    return true
  end if
  return false
end Remove

Reverse Traversal

ReverseTraversal(tail)
  Pre: tail is the node of the list to traverse
  Post: the list has been traversed in reverse order
  n ← tail
  while n != ø
    yield n.value
    n ← n.previous
  end while
end Reverse Traversal

Complexities

Time Complexity

AccessSearchInsertionDeletion
O(n)O(n)O(1)O(n)

Space Complexity

O(n)

References

Read this in other languages: Русский, 简体中文, 日本語, Português, 한국어, Español,

The Original Article can be found on https://github.com 

#javascript #algorithms #datastructures #linkedlist

JavaScript Algorithms and Data Structures: Doubly Linked List
Dylan  Iqbal

Dylan Iqbal

1628754143

JavaScript Algorithms and Data Structures: Linked List

In computer science, a linked list is a linear collection of data elements, in which linear order is not given by their physical placement in memory. Instead, each element points to the next. It is a data structure consisting of a group of nodes which together represent a sequence. Under the simplest form, each node is composed of data and a reference (in other words, a link) to the next node in the sequence. This structure allows for efficient insertion or removal of elements from any position in the sequence during iteration. More complex variants add additional links, allowing efficient insertion or removal from arbitrary element references. A drawback of linked lists is that access time is linear (and difficult to pipeline). Faster access, such as random access, is not feasible. Arrays have better cache locality as compared to linked lists.

Linked List

Pseudocode for Basic Operations

Insert

Add(value)
  Pre: value is the value to add to the list
  Post: value has been placed at the tail of the list
  n ← node(value)
  if head = ø
    head ← n
    tail ← n
  else
    tail.next ← n
    tail ← n
  end if
end Add
Prepend(value)
 Pre: value is the value to add to the list
 Post: value has been placed at the head of the list
 n ← node(value)
 n.next ← head
 head ← n
 if tail = ø
   tail ← n
 end
end Prepend

Search

Contains(head, value)
  Pre: head is the head node in the list
       value is the value to search for
  Post: the item is either in the linked list, true; otherwise false
  n ← head
  while n != ø and n.value != value
    n ← n.next
  end while
  if n = ø
    return false
  end if
  return true
end Contains

Delete

Remove(head, value)
  Pre: head is the head node in the list
       value is the value to remove from the list
  Post: value is removed from the list, true, otherwise false
  if head = ø
    return false
  end if
  n ← head
  if n.value = value
    if head = tail
      head ← ø
      tail ← ø
    else
      head ← head.next
    end if
    return true
  end if
  while n.next != ø and n.next.value != value
    n ← n.next
  end while
  if n.next != ø
    if n.next = tail
      tail ← n
      tail.next = null
    end if
    n.next ← n.next.next
    return true
  end if
  return false
end Remove

Traverse

Traverse(head)
  Pre: head is the head node in the list
  Post: the items in the list have been traversed
  n ← head
  while n != ø
    yield n.value
    n ← n.next
  end while
end Traverse

Traverse in Reverse

ReverseTraversal(head, tail)
  Pre: head and tail belong to the same list
  Post: the items in the list have been traversed in reverse order
  if tail != ø
    curr ← tail
    while curr != head
      prev ← head
      while prev.next != curr
        prev ← prev.next
      end while
      yield curr.value
      curr ← prev
    end while
   yield curr.value
  end if
end ReverseTraversal

Complexities

Time Complexity

AccessSearchInsertionDeletion
O(n)O(n)O(1)O(n)

Space Complexity

O(n)

References

Read this in other languages: 简体中文, Русский, 日本語, Português, 한국어, Español,

The Original Article can be found on https://github.com 

#javascript #algorithms #datastructures #linkedlist

JavaScript Algorithms and Data Structures: Linked List
Madisyn  Lakin

Madisyn Lakin

1627314300

Learn All About Linked List Data Structure! What? How...

Definition : A linked list is a linear data structure, in which the elements are not stored at contiguous memory locations. The elements in a linked list are linked using pointers(entity that point to the next element)
In simple words, a linked list consists of nodes where each node contains a data field and a reference(link) to the next node in the list.

Some important terms in Linked List DS -

  1. Node/Link/Element/Object - Each node in the linked list consists of 2 parts -
    a) data
    b) link to the next node
  2. Next - This points to the next node/element in the linked list (since they are not stored in a contiguous memory locations)

Following are the standard Linked List Operations -

  1. Traversing a linked list.
  2. Append a new node (to the end) of a list
  3. Prepend a new node (to the beginning) of the list
  4. Inserting a new node to a specific position on the list
  5. Deleting a node from the list

Types of Linked List -

  1. Singly Linked List
  2. Doubly Linked List
  3. Circular Linked List

Applications of Linked List -

  1. Linked Lists can be used to implement Stacks , Queues.
  2. Linked Lists can also be used to implement Graphs. (Adjacency list representation of Graph).
  3. Implementing Hash Tables :- Each Bucket of the hash table can itself be a linked list. (Open chain hashing).
  4. Undo functionality in Photoshop or Word . Linked list of states

#linkedlist #linkedlistdatastructure #datastructures #linkedlistds #linkedlistoperations

#linkedlist

Learn All About Linked List Data Structure! What? How...
Amira  Ryan

Amira Ryan

1626608760

Linked List Remove Head Node | Linked List Remove Tail Node

Linked List Remove Head Node | Linked List Remove Tail Node | Data Structures with JavaScript

------- What Are Data Structures and Why Are They Important?
https://youtu.be/siEWYf1_vwE
------- JavaScript Constructor Function | JavaScript ‘this’ keyword
https://youtu.be/JwcoZIuofis
------- Understanding Prototype Object with Constructor Function
https://youtu.be/Wc9aY7qclbw
------- What is Linked List | Linked List and Node Constructor Function
https://youtu.be/503K2Gf_uJg
------- How to add node to Linked List | Adding Node to Linked List Head
https://youtu.be/3RACne-ssWw
------- How to add node to Linked List | Adding Node to Linked List Tail
https://youtu.be/bbrtKT0eabk
------- How to remove node from Linked List | Removing Node from Linked List Head and Tail
https://youtu.be/pmnlWFyrRzI

------- Complete Playlist on Data Structures with JavaScript
https://www.youtube.com/watch?v=siEWYf1_vwE&list=PLt7lRnT2c5QQ093acXEYmQLV2_7LravGr

Other Interesting Videos and Video series on development:
------- Fullstack Web Developer Interview Preparation
https://www.youtube.com/watch?v=lYVQUc6QKUM&list=PLt7lRnT2c5QQJA9_upoeGLv-_CSoAsp5W&index=1

------- Best Resource for Complete Guide on Flutter Development
https://www.youtube.com/watch?v=a-EcD1AKRag&list=PLt7lRnT2c5QS4N50fediyOPSrST_-Fh3g&index=1

------- Deep linking mobile applications
https://www.youtube.com/watch?v=s8YaclRknYw&list=PLt7lRnT2c5QRW9ZxKi5hsi9e_AmxLHA77&index=1

------- React Hooks Series
https://www.youtube.com/watch?v=5HPQiTFKPCw&list=PLt7lRnT2c5QRVIELOi2A0NRoY7JHAQdWB&index=1

------- Fundamentals of GraphQL in Hindi
https://www.youtube.com/watch?v=mAFPj-leaMw&list=PLt7lRnT2c5QTdzvHgKybuMankvw855qMW&index=1

Please share your suggestions and feedback with me in the comments below or on Twitter.

Twitter - https://twitter.com/CodeWithAK_
YouTube: https://www.youtube.com/TechTalksWithAK
Github: https://github.com/AnkitDroidGit
Linkedin - https://www.linkedin.com/in/kumarankitkumar/
Facebook Group - https://fb.com/groups/Tech.Talks.Group
Facebook Page - https://fb.com/Tech.Talks.With.AK
Instagram: https://www.instagram.com/Code.With.AK
Telegram: https://t.me/TechTalksWithAK

0:00 - Intro
0:18 - Remove Head of Linked List
6:00 - Remove Tail of Linked List
10:50 - Outro

#DataStructures #JavaScript #LinkedList #AnkitKumar #TechTalksWithAK #TechTalks

#datastructures #javascript #linkedlist

Linked List Remove Head Node | Linked List Remove Tail Node
Amira  Ryan

Amira Ryan

1626601260

How to add node to Linked List | Adding Node to Linked List Tail

How to add node to Linked List | Adding Node to Linked List Tail | Data Structures with JavaScript

We are going to want to be able to

  • add a node to the head of our linked list
  • add a node to the tail of our linked list,
  • remove the head node to retrieve its data and
  • remove the tail node to retrieve its data.

We are also going to want to be able to search our linked list to see if a certain piece of data that we are looking for actually resides in it.

------- What Are Data Structures and Why Are They Important?
https://youtu.be/siEWYf1_vwE
------- JavaScript Constructor Function | JavaScript ‘this’ keyword
https://youtu.be/JwcoZIuofis
------- Understanding Prototype Object with Constructor Function
https://youtu.be/Wc9aY7qclbw
------- What is Linked List | Linked List and Node Constructor Function
https://youtu.be/503K2Gf_uJg
------- How to add node to Linked List | Adding Node to Linked List Head
https://youtu.be/3RACne-ssWw
------- How to add node to Linked List | Adding Node to Linked List Tail
https://youtu.be/bbrtKT0eabk
------- How to remove node from Linked List | Removing Node from Linked List Head and Tail
https://youtu.be/pmnlWFyrRzI

------- Complete Playlist on Data Structures with JavaScript
https://www.youtube.com/watch?v=siEWYf1_vwE&list=PLt7lRnT2c5QQ093acXEYmQLV2_7LravGr

Other Interesting Videos and Video series on development:
------- Fullstack Web Developer Interview Preparation
https://www.youtube.com/watch?v=lYVQUc6QKUM&list=PLt7lRnT2c5QQJA9_upoeGLv-_CSoAsp5W&index=1

------- Best Resource for Complete Guide on Flutter Development
https://www.youtube.com/watch?v=a-EcD1AKRag&list=PLt7lRnT2c5QS4N50fediyOPSrST_-Fh3g&index=1

------- Deep linking mobile applications
https://www.youtube.com/watch?v=s8YaclRknYw&list=PLt7lRnT2c5QRW9ZxKi5hsi9e_AmxLHA77&index=1

------- React Hooks Series
https://www.youtube.com/watch?v=5HPQiTFKPCw&list=PLt7lRnT2c5QRVIELOi2A0NRoY7JHAQdWB&index=1

------- Fundamentals of GraphQL in Hindi
https://www.youtube.com/watch?v=mAFPj-leaMw&list=PLt7lRnT2c5QTdzvHgKybuMankvw855qMW&index=1

Please share your suggestions and feedback with me in the comments below or on Twitter.

Twitter - https://twitter.com/CodeWithAK_
YouTube: https://www.youtube.com/TechTalksWithAK
Github: https://github.com/AnkitDroidGit
Linkedin - https://www.linkedin.com/in/kumarankitkumar/
Facebook Group - https://fb.com/groups/Tech.Talks.Group
Facebook Page - https://fb.com/Tech.Talks.With.AK
Instagram: https://www.instagram.com/Code.With.AK
Telegram: https://t.me/TechTalksWithAK

#LinkedList #DataStructures #JavaScript #CodeWithAK #TechTalksWithAK #AK #Ankit #Kumar #AnkitKumar

#linkedlist #datastructures #javascript

How to add node to Linked List | Adding Node to Linked List Tail
Amira  Ryan

Amira Ryan

1626594300

How to add node to Linked List | Adding Node to Linked List Head

How to add node to Linked List | Adding Node to Linked List Head | Data Structures with JavaScript

We are going to want to be able to

  • add a node to the head of our linked list
  • add a node to the tail of our linked list,
  • remove the head node to retrieve its data and
  • remove the tail node to retrieve its data.

We are also going to want to be able to search our linked list to see if a certain piece of data that we are looking for actually resides in it.

------- What Are Data Structures and Why Are They Important?
https://youtu.be/siEWYf1_vwE
------- JavaScript Constructor Function | JavaScript ‘this’ keyword
https://youtu.be/JwcoZIuofis
------- Understanding Prototype Object with Constructor Function
https://youtu.be/Wc9aY7qclbw
------- What is Linked List | Linked List and Node Constructor Function
https://youtu.be/503K2Gf_uJg
------- How to add node to Linked List | Adding Node to Linked List Head
https://youtu.be/3RACne-ssWw
------- How to add node to Linked List | Adding Node to Linked List Tail
https://youtu.be/bbrtKT0eabk
------- How to remove node from Linked List | Removing Node from Linked List Head and Tail
https://youtu.be/pmnlWFyrRzI

------- Complete Playlist on Data Structures with JavaScript
https://www.youtube.com/watch?v=siEWYf1_vwE&list=PLt7lRnT2c5QQ093acXEYmQLV2_7LravGr

Other Interesting Videos and Video series on development:
------- Fullstack Web Developer Interview Preparation
https://www.youtube.com/watch?v=lYVQUc6QKUM&list=PLt7lRnT2c5QQJA9_upoeGLv-_CSoAsp5W&index=1

------- Best Resource for Complete Guide on Flutter Development
https://www.youtube.com/watch?v=a-EcD1AKRag&list=PLt7lRnT2c5QS4N50fediyOPSrST_-Fh3g&index=1

------- Deep linking mobile applications
https://www.youtube.com/watch?v=s8YaclRknYw&list=PLt7lRnT2c5QRW9ZxKi5hsi9e_AmxLHA77&index=1

------- React Hooks Series
https://www.youtube.com/watch?v=5HPQiTFKPCw&list=PLt7lRnT2c5QRVIELOi2A0NRoY7JHAQdWB&index=1

------- Fundamentals of GraphQL in Hindi
https://www.youtube.com/watch?v=mAFPj-leaMw&list=PLt7lRnT2c5QTdzvHgKybuMankvw855qMW&index=1

Please share your suggestions and feedback with me in the comments below or on Twitter.

Twitter - https://twitter.com/CodeWithAK_
YouTube: https://www.youtube.com/TechTalksWithAK
Github: https://github.com/AnkitDroidGit
Linkedin - https://www.linkedin.com/in/kumarankitkumar/
Facebook Group - https://fb.com/groups/Tech.Talks.Group
Facebook Page - https://fb.com/Tech.Talks.With.AK
Instagram: https://www.instagram.com/Code.With.AK
Telegram: https://t.me/TechTalksWithAK

#LinkedList #DataStructures #JavaScript #CodeWithAK #TechTalksWithAK #AK #Ankit #Kumar #AnkitKumar

0:00 - Introduction
1:07 - Add Node to Head of Linked List explained
1:53 - Coding AddToHead method
8:27 - Understand AddToHead method Line by Line
10:28 - Adding Nodes to Linked List
14:07 - Traversing Linked List from Head and Tail
16:00 - Outroduction

#linkedlist #datastructures #javascript

How to add node to Linked List | Adding Node to Linked List Head
Amira  Ryan

Amira Ryan

1626586620

What is Linked List | Linked List and Node Constructor Function

What is Linked List | Linked List and Node Constructor Function | Data Structures with JavaScript

Linkedin List a list of elements called nodes that are connected together or linked together in a single file line.
There are two types of linked lists, a singly linked list and a doubly linked list.
In a singly linked list, each node only has reference to the node after it or the next node.
In a doubly-linked list, each node has reference to the next node, but it also has reference to the one before it as well or the previous node.

------- What Are Data Structures and Why Are They Important?
https://youtu.be/siEWYf1_vwE
------- JavaScript Constructor Function | JavaScript ‘this’ keyword
https://youtu.be/JwcoZIuofis
------- Understanding Prototype Object with Constructor Function
https://youtu.be/Wc9aY7qclbw
------- What is Linked List | Linked List and Node Constructor Function
https://youtu.be/503K2Gf_uJg
------- How to add node to Linked List | Adding Node to Linked List Head
https://youtu.be/3RACne-ssWw
------- How to add node to Linked List | Adding Node to Linked List Tail
https://youtu.be/bbrtKT0eabk
------- How to remove node from Linked List | Removing Node from Linked List Head and Tail
https://youtu.be/pmnlWFyrRzI

------- Complete Playlist on Data Structures with JavaScript
https://www.youtube.com/watch?v=siEWYf1_vwE&list=PLt7lRnT2c5QQ093acXEYmQLV2_7LravGr

Other Interesting Videos and Video series on development:
------- Fullstack Web Developer Interview Preparation
https://www.youtube.com/watch?v=lYVQUc6QKUM&list=PLt7lRnT2c5QQJA9_upoeGLv-_CSoAsp5W&index=1

------- Best Resource for Complete Guide on Flutter Development
https://www.youtube.com/watch?v=a-EcD1AKRag&list=PLt7lRnT2c5QS4N50fediyOPSrST_-Fh3g&index=1

------- Deep linking mobile applications
https://www.youtube.com/watch?v=s8YaclRknYw&list=PLt7lRnT2c5QRW9ZxKi5hsi9e_AmxLHA77&index=1

------- React Hooks Series
https://www.youtube.com/watch?v=5HPQiTFKPCw&list=PLt7lRnT2c5QRVIELOi2A0NRoY7JHAQdWB&index=1

------- Fundamentals of GraphQL in Hindi
https://www.youtube.com/watch?v=mAFPj-leaMw&list=PLt7lRnT2c5QTdzvHgKybuMankvw855qMW&index=1

Please share your suggestions and feedback with me in the comments below or on Twitter.

Twitter - https://twitter.com/CodeWithAK_
YouTube: https://www.youtube.com/TechTalksWithAK
Github: https://github.com/AnkitDroidGit
Linkedin - https://www.linkedin.com/in/kumarankitkumar/
Facebook Group - https://fb.com/groups/Tech.Talks.Group
Facebook Page - https://fb.com/Tech.Talks.With.AK
Instagram: https://www.instagram.com/Code.With.AK
Telegram: https://t.me/TechTalksWithAK

#LinkedList #DataStructures #JavaScript

0:00 - Intro
0:21 - What is Linked List?
1:45 - Operation on Linked List
2:45 - Data Representation of Linked List
3:17 - Coding Linked List
9:55 - Outro

#linkedlist #datastructures #javascript

What is Linked List | Linked List and Node Constructor Function

LinkedList Introduction | Java Collections Framework [Video]

This incredibly in-depth guide will show you everything you need to know about using LinkedList within Java Collections Framework (JCF).

In the video below, we take a closer look at the What is LinkedList? | LinkedList Introduction and Sample Programs | Java Collections Framework. Let’s get started!

#tutorial #video #linkedlist #java collection framework example #linkedlist examples in java

LinkedList Introduction | Java Collections Framework [Video]

Aman Agrawal

1606131456

Delete a Node, Is Same Tree, Move Zeroes

Read this blog to know more about these java features

https://www.loginradius.com/engineering/blog/delete-a-node-is-same-tree-move-zeroes/

#java #javascript #datastructure #linkedlist

Delete a Node, Is Same Tree, Move Zeroes
Macey  Legros

Macey Legros

1600508160

LinkedList in Java Example | Java LinkedList Tutorial

LinkedList in Java is a linear data structure (like a  stack), but instead of storage of data elements contiguous, each item of LinkedList is stored separately with the help of pointer. The data structure is a fast and efficient way to store and organize data. Each item is known as a node, and the node consists of two parts-data part and the pointer part. Every pointer points to the address of the next node. The last node of the LinkedList points to NULL.

LinkedList in Java

In Java, the LinkedList class implements the List interface, and this class uses a doubly linked list to store the data elements.

See the following figure.

LinkedList in Java

Unlike a regular linked list, the doubly linked list consists of there part in each node- previous pointerdata part, and next pointer.

Java LinkedList Tutorial

#java #linkedlist #java linkedlist

LinkedList in Java Example | Java LinkedList Tutorial
Macey  Legros

Macey Legros

1600150620

Java List Interface Example | List Interface In Java Tutorial

Java List Interface extends Collection interface. The list interface is used to store and manipulate items. Insertion and deletion are positional based, and the list can have duplicate items in it. In general, it is used to store lists of objects and preserves the order. List Interface is implemented by  ArrayList,  LinkedList,  Vector, and  Stack classes.

Java List Interface

The List interface places additional stipulations, beyond those specified in a Collection interface, on the contracts of an iterator, add, remove, equals, and hashCode methods.

Declarations for other inherited methods are also included here for convenience. The ordered collection which is also known as a sequence.

The user of this  interface has precise control over where in the list, each element is inserted. The user can access items by their integer index (position in the list), and search for elements in the list.

Unlike sets, lists typically allow duplicate elements. More formally, lists usually allow pairs of elements e1 and e2 such that e1.equals(e2), and they usually allow multiple null items if they allow null items at all.

It is not that inconceivable that someone might wish to implement the list that prohibits duplicates, by throwing the runtime exceptions when a user attempts to insert them, but we expect this usage to be rare.

#java #collection #linkedlist #arraylist #vector

Java List Interface Example | List Interface In Java Tutorial