Linked List

A Linked List is a linear data structure. The Linked List consisting of a group of nodes that together represent a sequence.

Linked List has behaved like each node contains a connection to another link or another node. also linked list is the most used data structure after the array.
1.Insert
2.Delete
3.Search
4.Null

Insert :

The insert method is used for adding the data to the LinkedList.

Delete :

The delete is deleting the given node or element from the linked list.

Search :

A search returns a given node on the linked list.

Null :

if the next element is not having a data or node then this condition was true and return null.

This is how a linked list works the 1st is head and after I go for the next node or data if he doesn't get the next data then return null.

LinkedList example using Javascript :

class LinkedListNode{ constructor(data){ this.data = data; this.next = null; this.previous = null; } } class LinkedList{ constructor(){ this.head = null; this.tail = null; this.length = null; } insert(data){ const node = new LinkedListNode(data); if(!this.head){ this.head = node; this.tail = node; } else{ this.tail.previous = node; this.tail.next = node; this.tail = node; } this.length +=1; } } const dataList = new LinkedList(); dataList.insert(10); dataList.insert(34); dataList.insert(53); dataList.insert(45); let currentNode = dataList.head; for (let i = 0; i < dataList.length; i++) { console.log(currentNode.data); currentNode = currentNode.next; } console.log(JSON.stringify(dataList, null , 2)); 

Output :

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