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Intel DSA Interview Questions
22 curated coding interview questions directly asked in Intel technical rounds, sorted by frequency with recency and difficulty diagnostics.
22
Total Questions
7 (32%)
Easy Problems
14 (64%)
Medium Problems
1 (5%)
Hard Problems
🔥 Most Tested Topics:
Strings (7)Core DSA (6)Arrays (5)Linked List (2)Trees (2)
📂 Sourced Datasets:
All questionsOlder than 6 months
| ID | Problem | Difficulty | Topic | Pattern | Acceptance | Frequency | Recency |
|---|---|---|---|---|---|---|---|
| 1 | Two Sum | Easy | Arrays | Sorting / Prefix / Scan; Two Pointers | 57.5% | 100.0% | all |
| 2526 | Find Consecutive Integers from a Data Stream | Medium | Core DSA | Implementation / Reasoning | 51.2% | 100.0% | all |
| 1614 | Maximum Nesting Depth of the Parentheses | Easy | Arrays; Strings | Sorting / Prefix / Scan; Hashing / Sliding Window | 84.9% | 100.0% | all |
| 20 | Valid Parentheses | Easy | Strings | Hashing / Sliding Window | 44.2% | 87.5% | all |
| 138 | Copy List with Random Pointer | Medium | Linked List | Two Pointers | 62.9% | 87.5% | all |
| 42 | Trapping Rain Water | Hard | Core DSA | Two Pointers | 67.4% | 75.0% | all |
| 200 | Number of Islands | Medium | Graphs | BFS / DFS / Topological Sort | 64.4% | 75.0% | all |
| 146 | LRU Cache | Medium | Design | Data Structure Design | 47.4% | 75.0% | all |
| 9 | Palindrome Number | Easy | Strings | Hashing / Sliding Window | 60.6% | 75.0% | all |
| 11 | Container With Most Water | Medium | Core DSA | Two Pointers | 60.0% | 75.0% | all |
| 3 | Longest Substring Without Repeating Characters | Medium | Strings; Trees | Hashing / Sliding Window; DFS / BFS; Sliding Window | 39.1% | 62.5% | all |
| 151 | Reverse Words in a String | Medium | Strings | Hashing / Sliding Window | 56.4% | 62.5% | all |
| 204 | Count Primes | Medium | Core DSA | Implementation / Reasoning | 36.1% | 62.5% | all |
| 48 | Rotate Image | Medium | Arrays | Sorting / Prefix / Scan | 80.1% | 62.5% | all |
| 125 | Valid Palindrome | Easy | Strings | Hashing / Sliding Window | 53.3% | 62.5% | all |
| 53 | Maximum Subarray | Medium | Arrays | Sorting / Prefix / Scan | 53.3% | 62.5% | all |
| 155 | Min Stack | Medium | Stack / Queue | Monotonic Stack / Simulation | 58.2% | 62.5% | all |
| 238 | Product of Array Except Self | Medium | Arrays | Sorting / Prefix / Scan | 68.9% | 62.5% | all |
| 229 | Majority Element II | Medium | Core DSA | Implementation / Reasoning | 56.2% | 62.5% | all |
| 234 | Palindrome Linked List | Easy | Strings; Linked List | Hashing / Sliding Window; Two Pointers | 58.0% | 62.5% | all |
| 509 | Fibonacci Number | Easy | Core DSA | Implementation / Reasoning | 74.1% | 62.5% | all |
| 236 | Lowest Common Ancestor of a Binary Tree | Medium | Trees | DFS / BFS | 69.3% | 62.5% | all |