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Millennium DSA Interview Questions
11 curated coding interview questions directly asked in Millennium technical rounds, sorted by frequency with recency and difficulty diagnostics.
11
Total Questions
2 (18%)
Easy Problems
6 (55%)
Medium Problems
3 (27%)
Hard Problems
🔥 Most Tested Topics:
Strings (5)Trees (3)Core DSA (2)Dynamic Programming (2)Arrays (2)
📂 Sourced Datasets:
Last 6 monthsAll questionsOlder than 6 months
| ID | Problem | Difficulty | Topic | Pattern | Acceptance | Frequency | Recency |
|---|---|---|---|---|---|---|---|
| 49 | Group Anagrams | Medium | Strings | Hashing / Sliding Window | 72.6% | 100.0% | 6m |
| 121 | Best Time to Buy and Sell Stock | Easy | Core DSA | Implementation / Reasoning | 56.8% | 100.0% | all |
| 2484 | Count Palindromic Subsequences | Hard | Core DSA | Implementation / Reasoning | 41.2% | 100.0% | all |
| 20 | Valid Parentheses | Easy | Strings | Hashing / Sliding Window | 44.2% | 87.5% | all |
| 2603 | Collect Coins in a Tree | Hard | Trees; Dynamic Programming | DFS / BFS; State Transition | 40.1% | 87.5% | all |
| 56 | Merge Intervals | Medium | Arrays | Sorting / Prefix / Scan | 51.8% | 87.5% | all |
| 301 | Remove Invalid Parentheses | Hard | Strings | Hashing / Sliding Window | 49.9% | 75.0% | all |
| 139 | Word Break | Medium | Strings; Dynamic Programming | Hashing / Sliding Window; State Transition | 49.5% | 75.0% | all |
| 437 | Path Sum III | Medium | Arrays; Trees | Sorting / Prefix / Scan; DFS / BFS | 46.4% | 75.0% | all |
| 98 | Validate Binary Search Tree | Medium | Strings; Trees; Binary Search | Hashing / Sliding Window; DFS / BFS; Binary Search | 35.8% | 75.0% | all |
| 622 | Design Circular Queue | Medium | Stack / Queue; Design | Monotonic Stack / Simulation; Data Structure Design | 54.7% | 75.0% | all |