DSA Doctor
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Affirm DSA Interview Questions
10 curated coding interview questions directly asked in Affirm technical rounds, sorted by frequency with recency and difficulty diagnostics.
10
Total Questions
1 (10%)
Easy Problems
6 (60%)
Medium Problems
3 (30%)
Hard Problems
🔥 Most Tested Topics:
Strings (4)Core DSA (3)Arrays (2)Trees (1)Design (1)
📂 Sourced Datasets:
All questionsOlder than 6 months
| ID | Problem | Difficulty | Topic | Pattern | Acceptance | Frequency | Recency |
|---|---|---|---|---|---|---|---|
| 380 | Insert Delete GetRandom O(1) | Medium | Core DSA | Implementation / Reasoning | 55.4% | 100.0% | all |
| 3076 | Shortest Uncommon Substring in an Array | Medium | Arrays; Strings; Trees | Sorting / Prefix / Scan; Hashing / Sliding Window; DFS / BFS | 50.6% | 87.5% | all |
| 49 | Group Anagrams | Medium | Strings | Hashing / Sliding Window | 72.6% | 75.0% | all |
| 381 | Insert Delete GetRandom O(1) - Duplicates allowed | Hard | Arrays | Sorting / Prefix / Scan | 36.6% | 75.0% | all |
| 736 | Parse Lisp Expression | Hard | Core DSA | Implementation / Reasoning | 53.5% | 75.0% | all |
| 362 | Design Hit Counter | Medium | Design | Data Structure Design | 69.7% | 62.5% | all |
| 443 | String Compression | Medium | Strings | Hashing / Sliding Window | 60.0% | 62.5% | all |
| 242 | Valid Anagram | Easy | Strings | Hashing / Sliding Window | 68.1% | 62.5% | all |
| 322 | Coin Change | Medium | Dynamic Programming | State Transition | 48.4% | 50.0% | all |
| 465 | Optimal Account Balancing | Hard | Core DSA | Implementation / Reasoning | 50.5% | 50.0% | all |