Top 50 Linked Lists Interview Questions
The most frequently asked Linked Lists questions across all roles and companies, ranked by real interview frequency. Updated daily.
Reverse a singly linked list in-place using iterative pointer manipulation.
A S S E M B L E D
Crescent Electric Supply
CenterWellMerge two sorted singly linked lists into one sorted list by relinking existing nodes.
NeoDocto
Otter
SimplReverse a singly linked list iteratively and recursively.
1X Technologies AS
ERM
Inland Family of CompaniesUse Floyd's tortoise-and-hare algorithm to detect whether an Equifax review chain contains a linked-list cycle.
Us Government Jobs
AvidXchangeUse Floyd’s two-pointer algorithm to determine whether a singly linked list contains a cycle.
AMD Construction Group
Informatica
AkamaiImplement an LRU cache in O(1) average time using a hash table and doubly linked list.
Allianz
ICF
InsuletImplement an LRU cache with O(1) get and put operations using a hash map and doubly linked list.
Collins Aerospace
Larsen & Toubro
Del Rey Systems & TechnologySign up to see every question
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Problem At Meta, imagine multiple pre-sorted event streams need to be combined into one ordered feed. Given k sorted singly linked lists, merge them into o...
Meta
Google