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Zopsmart DSA Interview Questions
19 curated coding interview questions directly asked in Zopsmart technical rounds, sorted by frequency with recency and difficulty diagnostics.
19
Total Questions
3 (16%)
Easy Problems
13 (68%)
Medium Problems
3 (16%)
Hard Problems
🔥 Most Tested Topics:
Core DSA (8)Strings (7)Trees (4)Stack / Queue (2)Linked List (2)
📂 Sourced Datasets:
Last 6 monthsAll questionsOlder than 6 months
| ID | Problem | Difficulty | Topic | Pattern | Acceptance | Frequency | Recency |
|---|---|---|---|---|---|---|---|
| 394 | Decode String | Medium | Strings; Dynamic Programming; Stack / Queue | Hashing / Sliding Window; State Transition; Monotonic Stack / Simulation | 62.6% | 100.0% | 6m |
| 6 | Zigzag Conversion | Medium | Core DSA | Implementation / Reasoning | 54.2% | 100.0% | all |
| 42 | Trapping Rain Water | Hard | Core DSA | Two Pointers | 67.4% | 87.5% | all |
| 2074 | Reverse Nodes in Even Length Groups | Medium | Trees; Linked List | DFS / BFS; Two Pointers | 64.1% | 75.0% | all |
| 3602 | Hexadecimal and Hexatrigesimal Conversion | Easy | Core DSA | Implementation / Reasoning | 80.9% | 75.0% | all |
| 76 | Minimum Window Substring | Hard | Arrays; Strings; Trees | Sorting / Prefix / Scan; Hashing / Sliding Window; DFS / BFS; Sliding Window | 47.5% | 62.5% | all |
| 592 | Fraction Addition and Subtraction | Medium | Core DSA | Implementation / Reasoning | 66.4% | 62.5% | all |
| 11 | Container With Most Water | Medium | Core DSA | Two Pointers | 60.0% | 62.5% | all |
| 402 | Remove K Digits | Medium | Core DSA | Implementation / Reasoning | 36.9% | 62.5% | all |
| 299 | Bulls and Cows | Medium | Core DSA | Implementation / Reasoning | 52.5% | 62.5% | all |
| 151 | Reverse Words in a String | Medium | Strings | Hashing / Sliding Window | 56.4% | 62.5% | all |
| 991 | Broken Calculator | Medium | Stack / Queue | Monotonic Stack / Simulation | 56.1% | 62.5% | all |
| 49 | Group Anagrams | Medium | Strings | Hashing / Sliding Window | 72.6% | 50.0% | all |
| 15 | 3Sum | Medium | Arrays | Sorting / Prefix / Scan | 39.1% | 50.0% | all |
| 17 | Letter Combinations of a Phone Number | Medium | Strings; Backtracking | Hashing / Sliding Window; Backtracking | 66.1% | 50.0% | all |
| 25 | Reverse Nodes in k-Group | Hard | Trees; Linked List | DFS / BFS; Two Pointers | 66.1% | 50.0% | all |
| 5 | Longest Palindromic Substring | Medium | Strings; Trees | Hashing / Sliding Window; DFS / BFS | 37.8% | 50.0% | all |
| 242 | Valid Anagram | Easy | Strings | Hashing / Sliding Window | 68.1% | 50.0% | all |
| 14 | Longest Common Prefix | Easy | Core DSA | Implementation / Reasoning | 47.6% | 50.0% | all |