American ExpressLeetCode Questions
VerifiedCompany-wise coding interview questions asked by American Express, ranked by real frequency across 30-day, 3-month, and 6-month recency windows.
# | Problem | Difficulty | Frequency↓ | Acceptance | |
|---|---|---|---|---|---|
| #3013 | Hard | 100% | 54.7% | ||
| #1647 | Medium | 100% | 61.5% | ||
| #1201 | Ugly Number III3 sources | Medium | 100% | 31.7% | |
| #1224 | Maximum Equal Frequency3 sources | Hard | 100% | 38.3% | |
| #1521 | Hard | 100% | 47.4% | ||
| #3010 | Easy | 100% | 80.6% | ||
| #2278 | Percentage of Letter in String3 sources | Easy | 100% | 75.3% | |
| #2202 | Medium | 100% | 24.1% | ||
| #2317 | Maximum XOR After Operations3 sources | Medium | 100% | 80.0% | |
| #1775 | Medium | 100% | 54.7% | ||
| #2997 | Medium | 100% | 85.5% | ||
| #1 | Two Sum3 sources | Easy | 97% | 57.8% | |
| #4016 | Medium | 89% | 0.4% | ||
| #242 | Valid Anagram3 sources | Easy | 84% | 68.3% | |
| #121 | Best Time to Buy and Sell Stock3 sources | Easy | 84% | 57.0% | |
| #3 | Medium | 79% | 39.4% | ||
| #1304 | Easy | 71% | 78.4% | ||
| #2850 | Medium | 71% | 0.5% | ||
| #15 | 3Sum3 sources | Medium | 60% | 39.4% | |
| #189 | Rotate Array3 sources | Medium | 60% | 45.2% | |
| #46 | Permutations3 sources | Medium | 60% | 82.1% | |
| #205 | Isomorphic Strings3 sources | Easy | 60% | 48.7% | |
| #14 | Longest Common Prefix3 sources | Easy | 60% | 47.9% | |
| #142 | Linked List Cycle II3 sources | Medium | 60% | 58.5% | |
| #1250 | Check If It Is a Good Array3 sources | Hard | 60% | 65.5% | |
| #239 | Sliding Window Maximum2 sources | Hard | 60% | 0.5% | |
| #56 | Merge Intervals2 sources | Medium | 60% | 0.5% | |
| #23 | Merge k Sorted Lists2 sources | Hard | 60% | 0.6% |
American Express Technical Interview Overview & Company-Wise Questions
Software engineering and technical interviews at American Express emphasize real-world problem solving, algorithmic efficiency, and scalable data structure design. The curated dataset above contains 28 verified LeetCode problems, categorized by frequency and filtered across recent interview seasons.
Frequently Asked Questions
What are the top LeetCode questions for American Express?
Leading questions include Divide an Array Into Subarrays With Minimum Cost II, Minimum Deletions to Make Character Frequencies Unique, Ugly Number III. Reviewing questions with higher recency (within the last 30 to 90 days) yields the highest return on preparation time.
Where can I practice company-wise LeetCode questions for American Express?
You can practice all 28 American Express LeetCode questions right here on LeetMap Pro. Filter by 30-day, 3-month, and 6-month recency, track your progress with local checkpoints, and practice curated SQL problems completely free.
How should I prepare for American Express coding rounds?
Begin by reviewing Medium-difficulty problems (14 tracked), which constitute the majority of technical rounds. Complement coding practice with foundational DSA patterns like Sliding Window, Two Pointers, and Graph Traversal.