16 curated coding interview questions directly asked in Sofi technical rounds, sorted by frequency with recency and difficulty diagnostics.
| ID | Problem | Difficulty | Topic | Pattern | Acceptance | Frequency | Recency |
|---|---|---|---|---|---|---|---|
| 347 | Top K Frequent Elements | Medium | Heap | Priority Queue | 66.4% | 100.0% | 3m |
| 380 | Insert Delete GetRandom O(1) | Medium | Core DSA | Implementation / Reasoning | 55.4% | 100.0% | 3m |
| 2861 | Maximum Number of Alloys | Medium | Arrays | Sorting / Prefix / Scan | 41.0% | 100.0% | 3m |
| 68 | Text Justification | Hard | Core DSA | Implementation / Reasoning | 51.2% | 100.0% | 3m |
| 845 | Longest Mountain in Array | Medium | Arrays | Sorting / Prefix / Scan | 42.1% | 100.0% | all |
| 1347 | Minimum Number of Steps to Make Two Strings Anagram | Medium | Arrays; Strings | Sorting / Prefix / Scan; Hashing / Sliding Window | 82.5% | 100.0% | all |
| 76 | Minimum Window Substring | Hard | Arrays; Strings; Trees | Sorting / Prefix / Scan; Hashing / Sliding Window; DFS / BFS; Sliding Window | 47.5% | 87.5% | all |
| 2472 | Maximum Number of Non-overlapping Palindrome Substrings | Hard | Arrays; Strings; Trees; Greedy | Sorting / Prefix / Scan; Hashing / Sliding Window; DFS / BFS; Greedy | 44.7% | 87.5% | all |
| 200 | Number of Islands | Medium | Graphs | BFS / DFS / Topological Sort | 64.4% | 75.0% | all |
| 735 | Asteroid Collision | Medium | Core DSA | Implementation / Reasoning | 47.9% | 75.0% | all |
| 697 | Degree of an Array | Easy | Arrays | Sorting / Prefix / Scan | 58.4% | 75.0% | all |
| 146 | LRU Cache | Medium | Design | Data Structure Design | 47.4% | 75.0% | all |
| 23 | Merge k Sorted Lists | Hard | Arrays; Linked List; Heap | Sorting / Prefix / Scan; Two Pointers; Priority Queue | 59.6% | 75.0% | all |
| 13 | Roman to Integer | Easy | Strings | Hashing / Sliding Window | 66.6% | 62.5% | all |
| 1229 | Meeting Scheduler | Medium | Greedy | Greedy | 55.2% | 62.5% | all |
| 127 | Word Ladder | Hard | Strings | Hashing / Sliding Window | 45.6% | 62.5% | all |