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Top 50 Problems on Linked List Data Structure asked in SDE Interviews

A Linked List is a linear data structure that looks like a chain of nodes, where each node is a different element. Unlike Arrays, Linked List elements are not stored at a contiguous location. Here is the collection of the Top 50 list of frequently asked interviews question on Linked Lists. Problems in this Article are divided into three Levels so that readers can practice according to the difficulty level step by step. 

To learn more about Linked List, please refer to the Tutorial on Linked List.

Top-Interview-Questions-on-linkedlist

Linked List Interview Questions

Given below are the most frequently asked interview questions on Linked List:

Easy Level Problems on Linked List Data Structure

Print the Middle of a given linked list
Reverse a Linked List
Reverse a Doubly Linked List
Rotate a linked list.
Nth node from end of linked list
Delete last occurrence of an item from linked list
Delete middle of linked list
Remove duplicate elements from sorted linked list
Detect Loop in linked list
Delete N nodes after M nodes of a linked list
Merge a linked list into another linked list at alternate positions
Circular Linked List Traversal
Deletion from a Circular Linked List
Delete without head pointer
Implement Queue using Linked List
Implement a stack using singly linked list
Remove every k-th node of the linked list
Pairwise swap of a Linked list
Occurence of an integer in a Linked List
Given a Linked list of 0s, 1s and 2s, sort it
Deletion in Linked List

Medium Level Problems on Linked List Data Structure

Convert singly linked list into circular linked list
Reverse a linked list in groups of given size
Merge two sorted linked lists
Remove loop in Linked List
Function to check if a singly linked list is palindrome
Remove all occurrences of one Linked list in another Linked list
Intersection point in Y shaped Linked lists
Intersection of two Sorted Linked Lists
Split a Circular Linked List into two halves
Find pairs with given sum in doubly linked list
Remove duplicates from an unsorted doubly linked list
Intersection point of two Linked Lists.
Add two numbers represented by Linked lists
Multiply two numbers represented by Linked Lists
Swap Kth node from beginning with Kth node from end in a Linked List
Sort a k sorted doubly linked list
Rotate Doubly linked list by N nodes
Convert a Binary Tree into Doubly Linked List in spiral fashion
Convert a given Binary Tree to Doubly Linked List
Construct a linked list from 2D matrix
Reverse a doubly linked list in groups of given size

Hard Level Problems on Linked List Data Structure

Reverse a sublist of linked list
Rearrange a given linked list in-place.
Reverse Alternate K Nodes in a Singly Linked List:
Reverse a Linked List in groups of given size
Merge k Sorted Linked Lists
Flattening a Linked List
Partition a linked list around a given value
Clone a linked list with random pointers

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