Linked List Interview Questions

Rank

#716HardFrequency: 100%

Max Stack

Linked List Stack Design Doubly-Linked List Ordered Set

Rank

#432HardFrequency: 93.8%

All O`one Data Structure

Rank

#2MediumFrequency: 81.4%

Add Two Numbers

Linked List Math Recursion

Rank

#460HardFrequency: 78.9%

LFU Cache

Rank

#138MediumFrequency: 78.1%

Copy List with Random Pointer

Rank

#206EasyFrequency: 75.8%

Reverse Linked List

Rank

#23HardFrequency: 75.1%

Merge k Sorted Lists

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

Rank

#160EasyFrequency: 73.9%

Intersection of Two Linked Lists

Asked at Airbnb

Hash Table Linked List Two Pointers

Rank

#21EasyFrequency: 66.7%

Merge Two Sorted Lists

#10

Rank

#19MediumFrequency: 64.7%

Remove Nth Node From End of List

#11

Rank

#758MediumFrequency: 63.7%

Convert Binary Search Tree to Sorted Doubly Linked List

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

#12

Rank

#850MediumFrequency: 63.4%

Insert into a Sorted Circular Linked List

#13

Rank

#860MediumFrequency: 62.5%

Design Circular Queue

#14

Rank

#25HardFrequency: 62%

Reverse Nodes in k-Group

#15

Rank

#817EasyFrequency: 61.4%

Design HashMap

#16

Rank

#143MediumFrequency: 59.3%

Reorder List

#17

Rank

#1905MediumFrequency: 58%

Design Authentication Manager

#18

Rank

#234EasyFrequency: 57.2%

Palindrome Linked List

#19

Rank

#328MediumFrequency: 53.3%

Odd Even Linked List

#20

Rank

#141EasyFrequency: 52.8%

Linked List Cycle

Hash Table Linked List Two Pointers Floyd's Cycle Finding Algorithm

#21

Rank

#908EasyFrequency: 51.4%

Middle of the Linked List

#22

Rank

#237MediumFrequency: 51%

Delete Node in a Linked List

#23

Rank

#61MediumFrequency: 50%

Rotate List

#24

Rank

#116MediumFrequency: 48.8%

Populating Next Right Pointers in Each Node

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

#25

Rank

#24MediumFrequency: 48.7%

Swap Nodes in Pairs

#26

Rank

#1267MediumFrequency: 47.5%

Remove Zero Sum Consecutive Nodes from Linked List

#27

Rank

#1765MediumFrequency: 47.4%

Merge In Between Linked Lists

#28

Rank

#92MediumFrequency: 46.7%

Reverse Linked List II

Asked at Infosys

#29

Rank

#148MediumFrequency: 46%

Sort List

Linked List Two Pointers Divide and Conquer Sorting Merge Sort

#30

Rank

#142MediumFrequency: 45%

Linked List Cycle II

Hash Table Linked List Two Pointers Floyd's Cycle Finding Algorithm

#31

Rank

#83EasyFrequency: 43.3%

Remove Duplicates from Sorted List

#32

Rank

#355MediumFrequency: 41.2%

Design Twitter

Hash Table Linked List Design Heap (Priority Queue)

#33

Rank

#114MediumFrequency: 40.5%

Flatten Binary Tree to Linked List

Linked List Stack Tree Depth-First Search Binary Tree

#34

Rank

#117MediumFrequency: 40%

Populating Next Right Pointers in Each Node II

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

#35

Rank

#86MediumFrequency: 38.2%

Partition List

#36

Rank

#445MediumFrequency: 38.2%

Add Two Numbers II

#37

Rank

#2299MediumFrequency: 34.3%

Merge Nodes in Between Zeros

Linked List Simulation

#38

Rank

#528MediumFrequency: 34.2%

Swapping Nodes in a Linked List

#39

Rank

#203EasyFrequency: 33.3%

Remove Linked List Elements

#40

Rank

#1411EasyFrequency: 33.3%

Convert Binary Number in a Linked List to Integer

#41

Rank

#1072MediumFrequency: 32.8%

Next Greater Node In Linked List

Array Linked List Stack Monotonic Stack

#42

Rank

#382MediumFrequency: 31.8%

Linked List Random Node

Linked List Math Reservoir Sampling Randomized

#43

Rank

#82MediumFrequency: 31.1%

Remove Duplicates from Sorted List II

#44

Rank

#838MediumFrequency: 31.1%

Design Linked List

#45

Rank

#766MediumFrequency: 30.2%

Flatten a Multilevel Doubly Linked List

Linked List Depth-First Search Doubly-Linked List

#46

Rank

#1582MediumFrequency: 29.5%

Design Browser History

Array Linked List Stack Design Doubly-Linked List Data Stream

#47

Rank

#1982MediumFrequency: 29.3%

Remove Duplicates From an Unsorted Linked List

#48

Rank

#725MediumFrequency: 29.1%

Split Linked List in Parts

#49

Rank

#3501MediumFrequency: 28.9%

Delete Nodes From Linked List Present in Array

#50

Rank

#2389HardFrequency: 28.1%

Design a Text Editor

Linked List String Stack Design Simulation Doubly-Linked List

#51

Rank

#109MediumFrequency: 27.7%

Convert Sorted List to Binary Search Tree

Linked List Divide and Conquer Tree Binary Search Tree Binary Tree

#52

Rank

#1337HardFrequency: 27.3%

Design Skiplist

#53

Rank

#1618EasyFrequency: 27.3%

Delete N Nodes After M Nodes of a Linked List

#54

Rank

#2216MediumFrequency: 27.2%

Delete the Middle Node of a Linked List

#55

Rank

#2236MediumFrequency: 25.1%

Maximum Twin Sum of a Linked List

Linked List Two Pointers Stack

#56

Rank

#3773EasyFrequency: 24.4%

Minimum Pair Removal to Sort Array I

Array Hash Table Linked List Heap (Priority Queue)Simulation Doubly-Linked List Ordered Set

#57

Rank

#2573MediumFrequency: 23.6%

Remove Nodes From Linked List

Linked List Stack Recursion Monotonic Stack

#58

Rank

#2374MediumFrequency: 21.5%

Steps to Make Array Non-decreasing

Array Linked List Dynamic Programming Stack Monotonic Stack Simulation

#59

Rank

#835MediumFrequency: 20.3%

Linked List Components

#60

Rank

#1767MediumFrequency: 20%

Design Front Middle Back Queue

Array Linked List Design Queue Doubly-Linked List Data Stream

#61

Rank

#1774MediumFrequency: 20%

Add Two Polynomials Represented as Linked Lists

Linked List Math Two Pointers

#62

Rank

#2871MediumFrequency: 20%

Double a Number Represented as a Linked List

#63

Rank

#147MediumFrequency: 20%

Insertion Sort List

Linked List Sorting

#64

Rank

#369MediumFrequency: 18%

Plus One Linked List

#65

Rank

#379MediumFrequency: 18%

Design Phone Directory

Array Hash Table Linked List Design Queue

#66

Rank

#816EasyFrequency: 18%

Design HashSet

#67

Rank

#1903MediumFrequency: 16.4%

Design Most Recently Used Queue

Array Linked List Divide and Conquer Design Simulation Doubly-Linked List Sqrt Decomposition Treap Splay Tree

#68

Rank

#2182MediumFrequency: 16.1%

Find the Minimum and Maximum Number of Nodes Between Critical Points

#69

Rank

#3772HardFrequency: 15.7%

Minimum Pair Removal to Sort Array II

Array Hash Table Linked List Heap (Priority Queue)Simulation Doubly-Linked List Ordered Set

#70

Rank

#859MediumFrequency: 14.6%

Design Circular Deque

#71

Rank

#2411MediumFrequency: 12%

Spiral Matrix IV

Array Linked List Matrix Simulation

#72

Rank

#2903MediumFrequency: 12%

Insert Greatest Common Divisors in Linked List

Linked List Math Number Theory

#73

Rank

#2196MediumFrequency: 8.1%

Reverse Nodes in Even Length Groups

#74

Rank

#1484MediumFrequency: 8%

Linked List in Binary Tree

Linked List Tree Depth-First Search Binary Tree

#75

Rank

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Linked List Interview Questions

Master 75 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

LRU Cache

Rank

#716HardFrequency: 100%

Max Stack

Linked List Stack Design Doubly-Linked List Ordered Set

Rank

#432HardFrequency: 93.8%

All O`one Data Structure

Rank

#2MediumFrequency: 81.4%

Add Two Numbers

Linked List Math Recursion

Rank

#460HardFrequency: 78.9%

LFU Cache

Rank

#138MediumFrequency: 78.1%

Copy List with Random Pointer

Rank

#206EasyFrequency: 75.8%

Reverse Linked List

Rank

#23HardFrequency: 75.1%

Merge k Sorted Lists

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

Rank

#160EasyFrequency: 73.9%

Intersection of Two Linked Lists

Asked at Airbnb

Hash Table Linked List Two Pointers

Rank

#21EasyFrequency: 66.7%

Merge Two Sorted Lists

#10

Rank

#19MediumFrequency: 64.7%

Remove Nth Node From End of List

#11

Rank

#758MediumFrequency: 63.7%

Convert Binary Search Tree to Sorted Doubly Linked List

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

#12

Rank

#850MediumFrequency: 63.4%

Insert into a Sorted Circular Linked List

#13

Rank

#860MediumFrequency: 62.5%

Design Circular Queue

#14

Rank

#25HardFrequency: 62%

Reverse Nodes in k-Group

#15

Rank

#817EasyFrequency: 61.4%

Design HashMap

#16

Rank

#143MediumFrequency: 59.3%

Reorder List

#17

Rank

#1905MediumFrequency: 58%

Design Authentication Manager

#18

Rank

#234EasyFrequency: 57.2%

Palindrome Linked List

#19

Rank

#328MediumFrequency: 53.3%

Odd Even Linked List

#20

Rank

#141EasyFrequency: 52.8%

Linked List Cycle

Hash Table Linked List Two Pointers Floyd's Cycle Finding Algorithm

#21

Rank

#908EasyFrequency: 51.4%

Middle of the Linked List

#22

Rank

#237MediumFrequency: 51%

Delete Node in a Linked List

#23

Rank

#61MediumFrequency: 50%

Rotate List

#24

Rank

#116MediumFrequency: 48.8%

Populating Next Right Pointers in Each Node

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

#25

Rank

#24MediumFrequency: 48.7%

Swap Nodes in Pairs

#26

Rank

#1267MediumFrequency: 47.5%

Remove Zero Sum Consecutive Nodes from Linked List

#27

Rank

#1765MediumFrequency: 47.4%

Merge In Between Linked Lists

#28

Rank

#92MediumFrequency: 46.7%

Reverse Linked List II

Asked at Infosys

#29

Rank

#148MediumFrequency: 46%

Sort List

Linked List Two Pointers Divide and Conquer Sorting Merge Sort

#30

Rank

#142MediumFrequency: 45%

Linked List Cycle II

Hash Table Linked List Two Pointers Floyd's Cycle Finding Algorithm

#31

Rank

#83EasyFrequency: 43.3%

Remove Duplicates from Sorted List

#32

Rank

#355MediumFrequency: 41.2%

Design Twitter

Hash Table Linked List Design Heap (Priority Queue)

#33

Rank

#114MediumFrequency: 40.5%

Flatten Binary Tree to Linked List

Linked List Stack Tree Depth-First Search Binary Tree

#34

Rank

#117MediumFrequency: 40%

Populating Next Right Pointers in Each Node II

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

#35

Rank

#86MediumFrequency: 38.2%

Partition List

#36

Rank

#445MediumFrequency: 38.2%

Add Two Numbers II

#37

Rank

#2299MediumFrequency: 34.3%

Merge Nodes in Between Zeros

Linked List Simulation

#38

Rank

#528MediumFrequency: 34.2%

Swapping Nodes in a Linked List

#39

Rank

#203EasyFrequency: 33.3%

Remove Linked List Elements

#40

Rank

#1411EasyFrequency: 33.3%

Convert Binary Number in a Linked List to Integer

#41

Rank

#1072MediumFrequency: 32.8%

Next Greater Node In Linked List

Array Linked List Stack Monotonic Stack

#42

Rank

#382MediumFrequency: 31.8%

Linked List Random Node

Linked List Math Reservoir Sampling Randomized

#43

Rank

#82MediumFrequency: 31.1%

Remove Duplicates from Sorted List II

#44

Rank

#838MediumFrequency: 31.1%

Design Linked List

#45

Rank

#766MediumFrequency: 30.2%

Flatten a Multilevel Doubly Linked List

Linked List Depth-First Search Doubly-Linked List

#46

Rank

#1582MediumFrequency: 29.5%

Design Browser History

Array Linked List Stack Design Doubly-Linked List Data Stream

#47

Rank

#1982MediumFrequency: 29.3%

Remove Duplicates From an Unsorted Linked List

#48

Rank

#725MediumFrequency: 29.1%

Split Linked List in Parts

#49

Rank

#3501MediumFrequency: 28.9%

Delete Nodes From Linked List Present in Array

#50

Rank

#2389HardFrequency: 28.1%

Design a Text Editor

Linked List String Stack Design Simulation Doubly-Linked List

#51

Rank

#109MediumFrequency: 27.7%

Convert Sorted List to Binary Search Tree

Linked List Divide and Conquer Tree Binary Search Tree Binary Tree

#52

Rank

#1337HardFrequency: 27.3%

Design Skiplist

#53

Rank

#1618EasyFrequency: 27.3%

Delete N Nodes After M Nodes of a Linked List

#54

Rank

#2216MediumFrequency: 27.2%

Delete the Middle Node of a Linked List

#55

Rank

#2236MediumFrequency: 25.1%

Maximum Twin Sum of a Linked List

Linked List Two Pointers Stack

#56

Rank

#3773EasyFrequency: 24.4%

Minimum Pair Removal to Sort Array I

Array Hash Table Linked List Heap (Priority Queue)Simulation Doubly-Linked List Ordered Set

#57

Rank

#2573MediumFrequency: 23.6%

Remove Nodes From Linked List

Linked List Stack Recursion Monotonic Stack

#58

Rank

#2374MediumFrequency: 21.5%

Steps to Make Array Non-decreasing

Array Linked List Dynamic Programming Stack Monotonic Stack Simulation

#59

Rank

#835MediumFrequency: 20.3%

Linked List Components

#60

Rank

#1767MediumFrequency: 20%

Design Front Middle Back Queue

Array Linked List Design Queue Doubly-Linked List Data Stream

#61

Rank

#1774MediumFrequency: 20%

Add Two Polynomials Represented as Linked Lists

Linked List Math Two Pointers

#62

Rank

#2871MediumFrequency: 20%

Double a Number Represented as a Linked List

#63

Rank

#147MediumFrequency: 20%

Insertion Sort List

Linked List Sorting

#64

Rank

#369MediumFrequency: 18%

Plus One Linked List

#65

Rank

#379MediumFrequency: 18%

Design Phone Directory

Array Hash Table Linked List Design Queue

#66

Rank

#816EasyFrequency: 18%

Design HashSet

#67

Rank

#1903MediumFrequency: 16.4%

Design Most Recently Used Queue

Array Linked List Divide and Conquer Design Simulation Doubly-Linked List Sqrt Decomposition Treap Splay Tree

#68

Rank

#2182MediumFrequency: 16.1%

Find the Minimum and Maximum Number of Nodes Between Critical Points

#69

Rank

#3772HardFrequency: 15.7%

Minimum Pair Removal to Sort Array II

Array Hash Table Linked List Heap (Priority Queue)Simulation Doubly-Linked List Ordered Set

#70

Rank

#859MediumFrequency: 14.6%

Design Circular Deque

#71

Rank

#2411MediumFrequency: 12%

Spiral Matrix IV

Array Linked List Matrix Simulation

#72

Rank

#2903MediumFrequency: 12%

Insert Greatest Common Divisors in Linked List

Linked List Math Number Theory

#73

Rank

#2196MediumFrequency: 8.1%

Reverse Nodes in Even Length Groups

#74

Rank

#1484MediumFrequency: 8%

Linked List in Binary Tree