Amazon vs American Express Interview Questions
Amazon lists 1,968 LeetCode interview questions while American Express lists 23. They share 18 problems — 1% of Amazon's bank and 78% of American Express's. Focus on the overlap first, then drill into 1,950 Amazon-only and 5 American Express-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 18 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Amazon and American Express.
Step 2 — Company-specific depth: Add Amazon-specific problems like LRU Cache, Trapping Rain Water, Number of Islands and American Express-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Amazon skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
18 Shared Questions
High-priority problems to practice for both Amazon and American Express.
Unique to Amazon (1,950)
Problems in Amazon's list that do not appear at American Express.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Trapping Rain Water | Hard |
| Number of Islands | Medium |
| Group Anagrams | Medium |
| Add Two Numbers | Medium |
| Reorganize String | Medium |
| Longest Palindromic Substring | Medium |
| Merge Intervals | Medium |
| Container With Most Water | Medium |
| Median of Two Sorted Arrays | Hard |
| Koko Eating Bananas | Medium |
| Valid Parentheses | Easy |
Unique to American Express (5)
Problems in American Express's list that do not appear at Amazon.
Frequently Asked Questions
How many LeetCode questions do Amazon and American Express share?
Amazon and American Express share 18 LeetCode interview questions. 1950 problems appear only in Amazon's list and 5 appear only in American Express's list.
What topics overlap most between Amazon and American Express?
The most common shared topics between Amazon and American Express are Array (11 shared questions), Hash Table (7 shared questions), String (5 shared questions), Sorting (4 shared questions), Math (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Amazon or American Express?
Amazon has 527 Easy, 1074 Medium, and 367 Hard questions. American Express has 8 Easy, 12 Medium, and 3 Hard questions. Amazon has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Amazon and American Express?
Start with the 18 shared problems since they cover what both companies ask most often. Then add 20 Amazon-specific and 5 American Express-specific questions to round out your prep.