12 curated coding interview questions directly asked in Coinbase technical rounds, sorted by frequency with recency and difficulty diagnostics.
| ID | Problem | Difficulty | Topic | Pattern | Acceptance | Frequency | Recency |
|---|---|---|---|---|---|---|---|
| 528 | Random Pick with Weight | Medium | Core DSA | Implementation / Reasoning | 49.1% | 100.0% | 6m |
| 2043 | Simple Bank System | Medium | Core DSA | Implementation / Reasoning | 69.7% | 100.0% | all |
| 281 | Zigzag Iterator | Medium | Design | Data Structure Design | 67.0% | 87.5% | all |
| 588 | Design In-Memory File System | Hard | Design | Data Structure Design | 48.4% | 87.5% | all |
| 2325 | Decode the Message | Easy | Dynamic Programming | State Transition | 85.8% | 87.5% | all |
| 981 | Time Based Key-Value Store | Medium | Core DSA | Implementation / Reasoning | 49.9% | 87.5% | all |
| 68 | Text Justification | Hard | Core DSA | Implementation / Reasoning | 51.2% | 50.0% | all |
| 1166 | Design File System | Medium | Design | Data Structure Design | 65.1% | 50.0% | all |
| 3043 | Find the Length of the Longest Common Prefix | Medium | Core DSA | Implementation / Reasoning | 62.2% | 50.0% | all |
| 121 | Best Time to Buy and Sell Stock | Easy | Core DSA | Implementation / Reasoning | 56.8% | 50.0% | all |
| 622 | Design Circular Queue | Medium | Stack / Queue; Design | Monotonic Stack / Simulation; Data Structure Design | 54.7% | 50.0% | all |
| 210 | Course Schedule II | Medium | Graphs | BFS / DFS / Topological Sort | 55.5% | 50.0% | all |