Linked List Interview Questions

Master 19 linked list problems frequently asked in technical interviews. These questions test your understanding of linked listconcepts and are essential for coding interview success.

Total Problems

Easy

Medium

Hard

Max Stack

Asked at LinkedIn

Linked List Stack Design Doubly-Linked List Ordered Set

Rank

#817EasyFrequency: 100%

Design HashMap

Asked at DoorDash

Array Hash Table Linked List Design Hash Function

Rank

#2MediumFrequency: 93%

Add Two Numbers

Asked at Infosys

Linked List Math Recursion

Rank

#234EasyFrequency: 93%

Palindrome Linked List

Asked at Databricks

Linked List Two Pointers Stack Recursion

Rank

#19MediumFrequency: 92%

Remove Nth Node From End of List

Asked at Salesforce

Linked List Two Pointers

Rank

#146MediumFrequency: 88%

LRU Cache

Asked at Microsoft

Hash Table Linked List Design Doubly-Linked List

Rank

#141EasyFrequency: 82%

Linked List Cycle

Asked at Flipkart

Hash Table Linked List Two Pointers

Rank

#432HardFrequency: 82%

All O`one Data Structure

Asked at Infosys

Hash Table Linked List Design Doubly-Linked List

Rank

#109MediumFrequency: 79%

Convert Sorted List to Binary Search Tree

Asked at Flipkart

Linked List Divide and Conquer Tree Binary Search Tree Binary Tree

Rank

#23HardFrequency: 72%

Merge k Sorted Lists

Asked at Meta

Linked List Divide and Conquer Heap (Priority Queue)Merge Sort

#10

Rank

#206EasyFrequency: 71%

Reverse Linked List

Asked at Infosys

Linked List Recursion

#11

Rank

#138MediumFrequency: 67%

Copy List with Random Pointer

Asked at Amazon

Hash Table Linked List

#12

Rank

#758MediumFrequency: 64%

Convert Binary Search Tree to Sorted Doubly Linked List

Asked at Meta

Linked List Stack Tree Depth-First Search Binary Search Tree Binary Tree Doubly-Linked List

#13

Rank

#460HardFrequency: 60%

LFU Cache

Asked at Amazon

Hash Table Linked List Design Doubly-Linked List

#14

Rank

#850MediumFrequency: 57%

Insert into a Sorted Circular Linked List

Asked at Meta

Linked List

#15

Rank

#25HardFrequency: 55%

Reverse Nodes in k-Group

Asked at Salesforce

Linked List Recursion

#16

Rank

#114MediumFrequency: 53%

Flatten Binary Tree to Linked List

Asked at Google

Linked List Stack Tree Depth-First Search Binary Tree

#17

Rank

#116MediumFrequency: 51%

Populating Next Right Pointers in Each Node

Asked at Meta

Linked List Tree Depth-First Search Breadth-First Search Binary Tree

#18

Rank

#21EasyFrequency: 49%

Merge Two Sorted Lists

Asked at Oracle

Linked List Recursion

#19

Rank

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Linked List Interview Questions

Master 19 linked list problems frequently asked in technical interviews. These questions test your understanding of linked listconcepts and are essential for coding interview success.

Total Problems

Easy

Medium

Hard