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DSA / Data Structures / Linked List

Linked List

1.2K+ posts

Commonly Asked Data Structure Interview Questions on Linked List

Last Updated: 19 May 2025

Unlike arrays, which are stored in contiguous memory locations, linked lists consist of nodes, where each node contains data and a reference (or link) to the next node in ...read more

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Print Linked List

Last Updated: 11 December 2024

Given a Singly Linked List, the task is to print all the elements in the list.Examples:Input: 1-2-3-4-5-nullOutput: 1 2 3 4 5Explanation: Every element of each node from h...read more

Merge two sorted linked lists using Dummy Nodes

Last Updated: 17 August 2024

Given two sorted linked lists consisting of N and M nodes respectively. The task is to merge both of the lists (in place) and return the head of the merged list.Examples:I...read more

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Node Structure and Representation of Singly Linked List

Last Updated: 12 August 2024

A singly linked list is a data structure that consists of nodes, where each node contains two parts: a data field that holds the actual value and a pointer that points to ...read more

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Deletion at end (Removal of last node) in a Doubly Linked List

Last Updated: 09 August 2024

Given a doubly linked list, the task is to delete the last node of the given linked list.Examples:Input: 1 - 2 - 3 - NULLOutput: 1 - 2 - NULLExplanation: The last node of ...read more

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doubly linked list

Deletion at beginning (Removal of first node) in a Doubly Linked List

Last Updated: 09 August 2024

Given a doubly linked list, the task is to delete the node from the beginning of the linked list.Examples: Input : 1 - 2 - 3 - NULLOutput : 2 - 3 - NULLInput : 2 - 4 - 6 -...read more

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doubly linked list

Traversal in Doubly Linked List

Last Updated: 19 February 2025

Traversal of Doubly Linked List is one of the fundamental operations, where we traverse or visit each node of the linked list. In this article, we will cover how to traver...read more

doubly linked list

Insertion at the end in circular linked list

Last Updated: 08 August 2024

A circular linked list is a data structure where each node points to the next, and the last node connects back to the first, creating a loop. Insertion at the end in circu...read more

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Data Structures

circular linked list

Insertion at the beginning in circular linked list

Last Updated: 08 August 2024

A circular linked list is a special type of data structure where each node points to the next, and the last node connects back to the first, forming a loop. This design al...read more

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Data Structures

circular linked list

Insertion in an empty List in the circular linked list

Last Updated: 08 August 2024

A circular linked list is a type of data structure where each node points to the next one, and the last node connects back to the first, forming a circle. This setup allow...read more

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Data Structures

circular linked list

Insert a Node at the end of Doubly Linked List

Last Updated: 07 August 2024

Given a Doubly Linked List, the task is to insert a new node at the end of the linked list.Examples: Input: Linked List = 1 - 2 - 3, NewNode = 4Output: Linked List = 1 - 2...read more

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doubly linked list

Insert a Node at a specific position in Doubly Linked List

Last Updated: 07 August 2024

Given a Doubly Linked List, the task is to insert a new node at a specific position in the linked list. Examples:Input: Linked List = 1 - 2 - 4, newData = 3, position = 3O...read more

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doubly linked list

Insert a Node before a given node in Doubly Linked List

Last Updated: 07 August 2024

Given a Doubly Linked List, the task is to insert a new node before a given node in the linked list.Examples: Input: Linked List = 1 - 3 - 4, newData = 2, key = 3Output: L...read more

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doubly linked list

Insert a Node after a given node in Doubly Linked List

Last Updated: 07 August 2024

Given a Doubly Linked List, the task is to insert a new node after a given node in the linked list.Examples: Input: Linked List = 1 - 2 - 4, newData = 3, key = 2Output: Li...read more

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doubly linked list

Insert a Node at Front/Beginning of Doubly Linked List

Last Updated: 06 August 2024

Given a Doubly Linked List, the task is to insert a new node at the beginning/start/front of the linked list.Examples:Input: Linked List = 2 - 3 - 4 - NULL , New Node = 1...read more

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doubly linked list

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