QUESTIONS BY COMPANY

American Express LeetCode Questions 2026

Browse LeetCode problems frequently asked by American Express. 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.

Download the app
ProblemDifficultyFrequencyTopics
Two SumEASY
87.5%
ArrayHash Table
3SumMEDIUM
50%
ArrayTwo PointersSorting
Find a Value of a Mysterious Function Closest to TargetHARD
100%
ArrayBinary SearchBit ManipulationSegment Tree
Divide an Array Into Subarrays With Minimum Cost IIHARD
100%
ArrayHash TableSliding WindowHeap (Priority Queue)
Divide an Array Into Subarrays With Minimum Cost IEASY
100%
ArraySortingEnumeration
Minimum Deletions to Make Character Frequencies UniqueMEDIUM
100%
Hash TableStringGreedySorting
Ugly Number IIIMEDIUM
100%
MathBinary SearchCombinatoricsNumber Theory
Percentage of Letter in StringEASY
100%
String
Maximum Equal FrequencyHARD
100%
ArrayHash Table
Maximize the Topmost Element After K MovesMEDIUM
100%
ArrayGreedy
Maximum XOR After OperationsMEDIUM
100%
ArrayMathBit Manipulation
Equal Sum Arrays With Minimum Number of OperationsMEDIUM
100%
ArrayHash TableGreedyCounting
Minimum Number of Operations to Make Array XOR Equal to KMEDIUM
100%
ArrayBit Manipulation
Valid AnagramEASY
75%
Hash TableStringSorting
Longest Substring Without Repeating CharactersMEDIUM
75%
Hash TableStringSliding Window
Rotate ArrayMEDIUM
50%
ArrayMathTwo Pointers
PermutationsMEDIUM
50%
ArrayBacktracking
Best Time to Buy and Sell StockEASY
62.5%
ArrayDynamic Programming
Isomorphic StringsEASY
50%
Hash TableString
Longest Common PrefixEASY
50%
ArrayStringTrie

Practice with AI help

Find algorithm patterns and generate explained solutions.

Download the app