American Express vs Uber Interview Questions
American Express lists 23 LeetCode interview questions while Uber lists 362. They share 6 problems — 26% of American Express's bank and 2% of Uber's. Focus on the overlap first, then drill into 17 American Express-only and 356 Uber-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 6 overlapping problems first. These are the highest-yield questions for candidates interviewing at both American Express and Uber.
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 Uber-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Uber skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
6 Shared Questions
High-priority problems to practice for both American Express and Uber.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Valid Anagram | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Permutations | Medium |
| Longest Common Prefix | Easy |
Unique to American Express (17)
Problems in American Express's list that do not appear at Uber.
Unique to Uber (356)
Problems in Uber's list that do not appear at American Express.
| Problem | Difficulty |
|---|---|
| Bus Routes | Hard |
| Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit | Medium |
| Alien Dictionary | Hard |
| Number of Islands | Medium |
| Number of Islands II | Hard |
| Squares of a Sorted Array | Easy |
| Construct Quad Tree | Medium |
| Kth Smallest Element in a BST | Medium |
| First Unique Number | Medium |
| Find the Closest Palindrome | Hard |
| Word Search | Medium |
| Insert Delete GetRandom O(1) | Medium |
Frequently Asked Questions
How many LeetCode questions do American Express and Uber share?
American Express and Uber share 6 LeetCode interview questions. 17 problems appear only in American Express's list and 356 appear only in Uber's list.
What topics overlap most between American Express and Uber?
The most common shared topics between American Express and Uber are Array (4 shared questions), Hash Table (3 shared questions), String (3 shared questions), Sorting (1 shared questions), Sliding Window (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: American Express or Uber?
American Express has 8 Easy, 12 Medium, and 3 Hard questions. Uber has 45 Easy, 215 Medium, and 102 Hard questions. Uber has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both American Express and Uber?
Start with the 6 shared problems since they cover what both companies ask most often. Then add 17 American Express-specific and 20 Uber-specific questions to round out your prep.