American Express vs eBay Interview Questions
American Express lists 23 LeetCode interview questions while eBay lists 62. They share 3 problems — 13% of American Express's bank and 5% of eBay's. Focus on the overlap first, then drill into 20 American Express-only and 59 eBay-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 3 overlapping problems first. These are the highest-yield questions for candidates interviewing at both American Express and eBay.
Step 2 — Company-specific depth: Add American Express-specific problems like Minimum Deletions to Make Character Frequencies Unique, Maximum Equal Frequency, Divide an Array Into Subarrays With Minimum Cost II and eBay-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: eBay skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
3 Shared Questions
High-priority problems to practice for both American Express and eBay.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| 3Sum | Medium |
Unique to American Express (20)
Problems in American Express's list that do not appear at eBay.
Unique to eBay (59)
Problems in eBay's list that do not appear at American Express.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Remove One Element to Make the Array Strictly Increasing | Easy |
| Alternating Digit Sum | Easy |
| Partition Equal Subset Sum | Medium |
| Binary Gap | Easy |
| Minimize Maximum Pair Sum in Array | Medium |
| Minimum Window Subsequence | Hard |
| Design Skiplist | Hard |
| Subtree of Another Tree | Easy |
| Spiral Matrix | Medium |
| Top K Frequent Elements | Medium |
| Open the Lock | Medium |
Frequently Asked Questions
How many LeetCode questions do American Express and eBay share?
American Express and eBay share 3 LeetCode interview questions. 20 problems appear only in American Express's list and 59 appear only in eBay's list.
What topics overlap most between American Express and eBay?
The most common shared topics between American Express and eBay are Array (2 shared questions), Hash Table (2 shared questions), String (1 shared questions), Sliding Window (1 shared questions), Two Pointers (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: American Express or eBay?
American Express has 8 Easy, 12 Medium, and 3 Hard questions. eBay has 10 Easy, 39 Medium, and 13 Hard questions. eBay has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both American Express and eBay?
Start with the 3 shared problems since they cover what both companies ask most often. Then add 20 American Express-specific and 20 eBay-specific questions to round out your prep.