American Express vs Roblox Interview Questions
American Express lists 23 LeetCode interview questions while Roblox lists 56. They share 3 problems — 13% of American Express's bank and 5% of Roblox's. Focus on the overlap first, then drill into 20 American Express-only and 53 Roblox-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 Roblox.
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 Roblox-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Roblox 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 Roblox.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Longest Common Prefix | Easy |
Unique to American Express (20)
Problems in American Express's list that do not appear at Roblox.
Unique to Roblox (53)
Problems in Roblox's list that do not appear at American Express.
| Problem | Difficulty |
|---|---|
| Candy Crush | Medium |
| Reorganize String | Medium |
| Number of Ways to Wear Different Hats to Each Other | Hard |
| Text Justification | Hard |
| Maximize Distance to Closest Person | Medium |
| Task Scheduler | Medium |
| Course Schedule II | Medium |
| Design Hit Counter | Medium |
| Design Search Autocomplete System | Hard |
| Integer to English Words | Hard |
| Count Number of Nice Subarrays | Medium |
| Group the People Given the Group Size They Belong To | Medium |
Frequently Asked Questions
How many LeetCode questions do American Express and Roblox share?
American Express and Roblox share 3 LeetCode interview questions. 20 problems appear only in American Express's list and 53 appear only in Roblox's list.
What topics overlap most between American Express and Roblox?
The most common shared topics between American Express and Roblox are Array (2 shared questions), Hash Table (2 shared questions), String (2 shared questions), Sliding Window (1 shared questions), Trie (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: American Express or Roblox?
American Express has 8 Easy, 12 Medium, and 3 Hard questions. Roblox has 8 Easy, 35 Medium, and 13 Hard questions. Roblox has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both American Express and Roblox?
Start with the 3 shared problems since they cover what both companies ask most often. Then add 20 American Express-specific and 20 Roblox-specific questions to round out your prep.