DSA Doctor
Verified Company Vault
Siemens DSA Interview Questions
25 curated coding interview questions directly asked in Siemens technical rounds, sorted by frequency with recency and difficulty diagnostics.
25
Total Questions
8 (32%)
Easy Problems
13 (52%)
Medium Problems
4 (16%)
Hard Problems
🔥 Most Tested Topics:
Arrays (11)Strings (7)Core DSA (3)Graphs (2)Linked List (2)
📂 Sourced Datasets:
Last 6 monthsAll questionsOlder than 6 months
| ID | Problem | Difficulty | Topic | Pattern | Acceptance | Frequency | Recency |
|---|---|---|---|---|---|---|---|
| 200 | Number of Islands | Medium | Graphs | BFS / DFS / Topological Sort | 64.4% | 100.0% | 6m |
| 3187 | Peaks in Array | Hard | Arrays; Binary Search | Sorting / Prefix / Scan; Binary Search | 27.6% | 100.0% | all |
| 2064 | Minimized Maximum of Products Distributed to Any Store | Medium | Arrays | Sorting / Prefix / Scan | 63.1% | 100.0% | all |
| 56 | Merge Intervals | Medium | Arrays | Sorting / Prefix / Scan | 51.8% | 87.5% | all |
| 20 | Valid Parentheses | Easy | Strings | Hashing / Sliding Window | 44.2% | 75.0% | all |
| 21 | Merge Two Sorted Lists | Easy | Arrays; Linked List | Sorting / Prefix / Scan; Two Pointers | 68.3% | 75.0% | all |
| 218 | The Skyline Problem | Hard | Core DSA | Implementation / Reasoning | 45.4% | 75.0% | all |
| 146 | LRU Cache | Medium | Design | Data Structure Design | 47.4% | 75.0% | all |
| 1 | Two Sum | Easy | Arrays | Sorting / Prefix / Scan; Two Pointers | 57.5% | 62.5% | all |
| 41 | First Missing Positive | Hard | Arrays | Sorting / Prefix / Scan | 42.9% | 62.5% | all |
| 206 | Reverse Linked List | Easy | Linked List | Two Pointers | 80.6% | 62.5% | all |
| 242 | Valid Anagram | Easy | Strings | Hashing / Sliding Window | 68.1% | 62.5% | all |
| 628 | Maximum Product of Three Numbers | Easy | Arrays | Sorting / Prefix / Scan | 45.9% | 62.5% | all |
| 1344 | Angle Between Hands of a Clock | Medium | Core DSA | Implementation / Reasoning | 64.4% | 62.5% | all |
| 26 | Remove Duplicates from Sorted Array | Easy | Arrays | Sorting / Prefix / Scan; Two Pointers | 62.8% | 62.5% | all |
| 49 | Group Anagrams | Medium | Strings | Hashing / Sliding Window | 72.6% | 62.5% | all |
| 921 | Minimum Add to Make Parentheses Valid | Medium | Arrays; Strings | Sorting / Prefix / Scan; Hashing / Sliding Window | 74.4% | 62.5% | all |
| 5 | Longest Palindromic Substring | Medium | Strings; Trees | Hashing / Sliding Window; DFS / BFS | 37.8% | 62.5% | all |
| 152 | Maximum Product Subarray | Medium | Arrays | Sorting / Prefix / Scan | 36.4% | 62.5% | all |
| 260 | Single Number III | Medium | Core DSA | Implementation / Reasoning | 70.3% | 62.5% | all |
| 347 | Top K Frequent Elements | Medium | Heap | Priority Queue | 66.4% | 62.5% | all |
| 189 | Rotate Array | Medium | Arrays | Sorting / Prefix / Scan | 44.9% | 62.5% | all |
| 9 | Palindrome Number | Easy | Strings | Hashing / Sliding Window | 60.6% | 62.5% | all |
| 133 | Clone Graph | Medium | Graphs | BFS / DFS / Topological Sort | 65.3% | 62.5% | all |
| 420 | Strong Password Checker | Hard | Strings | Hashing / Sliding Window | 15.8% | 62.5% | all |
