Top 50 Recursion Interview Questions
The most frequently asked Recursion 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.
Expedia Group
NeoDocto
OtterUse a two-pointer string scan to determine whether a string reads the same forward and backward.
Dsv Air & Sea
Lucid Motors
AfterqueryUse postorder recursion to determine whether a binary tree is height-balanced in O(n) time.
Meta
Etsy
LendingTreeUse two pointers to determine whether a City National Bank reference label reads identically forward and backward.
Taboola
iHerb
SharpSpringReverse a singly linked list iteratively and recursively in Python.
1X Technologies AS
ERM
Inland Family of CompaniesDetermine whether a directed graph contains a cycle using DFS or topological sorting.
C3.ai
Moderna
PymetricsFind the lowest common ancestor of two nodes in a binary search tree using BST ordering.
Capital One
airtel
TAS Information IntelligenceSign up to see every question
Create a free account to unlock this list and practice real interview questions.