QUESTIONS BY COMPANY

Affirm LeetCode Questions 2026

Browse LeetCode problems frequently asked by Affirm. Filter by difficulty and timeframe to focus your interview prep.

Last updated: 10 July 2026

Try CodingInterviewAI free on a practice problem

New accounts get 10 free credits for the free AI model—up to five complete problems.

Timeframe

Difficulty

Problem	Difficulty	Frequency	Topics
Shortest Uncommon Substring in an Array	MEDIUM	87.5%	ArrayHash TableStringTrie
Group Anagrams	MEDIUM	75%	ArrayHash TableStringSorting
Design Hit Counter	MEDIUM	62.5%	ArrayBinary SearchDesignQueueData Stream
Insert Delete GetRandom O(1)	MEDIUM	100%	ArrayHash TableMathDesignRandomized
Insert Delete GetRandom O(1) - Duplicates allowed	HARD	75%	ArrayHash TableMathDesignRandomized
String Compression	MEDIUM	62.5%	Two PointersString
Parse Lisp Expression	HARD	75%	Hash TableStringStackRecursion
Valid Anagram	EASY	62.5%	Hash TableStringSorting
Coin Change	MEDIUM	62.5%	ArrayDynamic ProgrammingBreadth-First Search
Optimal Account Balancing	HARD	50%	ArrayDynamic ProgrammingBacktrackingBit ManipulationBitmask

Find algorithm patterns and generate explained solutions.