Top 50 functions Interview Questions
The most frequently asked functions questions across all roles and companies, ranked by real interview frequency. Updated daily.
Reverse a singly linked list iteratively and recursively while preserving every node and returning the new head.
NetsuiteAAppLogic NetworksKKinaxisReverse a string using indexed character access without built-in reverse functions.
John DeereReverse a singly linked list in place by rewiring each node's next pointer.
Fortinet
Accenture
City And County Of San FranciscoUse a closure with nonlocal state to process add and read operations on a running total.
RokuCCleverTapAccentureReverse a string character by character without using built-in reverse methods.
Air Apps
RBC
Itlize GlobalReverse the characters in a string using a loop without built-in reversal functions.
Peloton interactiveAAmdocs
DeloitteReverse a string using character traversal and return the reversed result.
CNA
Act Digital
Los Alamos National LaboratoryReturn Groupon deal category values level by level using breadth-first search on a binary tree.
Rupeek
GrouponSign up to see every question
Create a free account to unlock this list and practice real interview questions.