American Express vs Morgan Stanley Interview Questions
American Express lists 23 LeetCode interview questions while Morgan Stanley lists 60. They share 4 problems — 17% of American Express's bank and 7% of Morgan Stanley's. Focus on the overlap first, then drill into 19 American Express-only and 56 Morgan Stanley-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 4 overlapping problems first. These are the highest-yield questions for candidates interviewing at both American Express and Morgan Stanley.
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 Morgan Stanley-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: American Express skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
4 Shared Questions
High-priority problems to practice for both American Express and Morgan Stanley.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Best Time to Buy and Sell Stock | Easy |
| 3Sum | Medium |
Unique to American Express (19)
Problems in American Express's list that do not appear at Morgan Stanley.
Unique to Morgan Stanley (56)
Problems in Morgan Stanley's list that do not appear at American Express.
Frequently Asked Questions
How many LeetCode questions do American Express and Morgan Stanley share?
American Express and Morgan Stanley share 4 LeetCode interview questions. 19 problems appear only in American Express's list and 56 appear only in Morgan Stanley's list.
What topics overlap most between American Express and Morgan Stanley?
The most common shared topics between American Express and Morgan Stanley are Array (3 shared questions), Hash Table (2 shared questions), String (1 shared questions), Sliding Window (1 shared questions), Dynamic Programming (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: American Express or Morgan Stanley?
American Express has 8 Easy, 12 Medium, and 3 Hard questions. Morgan Stanley has 13 Easy, 40 Medium, and 7 Hard questions. American Express has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both American Express and Morgan Stanley?
Start with the 4 shared problems since they cover what both companies ask most often. Then add 19 American Express-specific and 20 Morgan Stanley-specific questions to round out your prep.