51 curated coding interview questions directly asked in Anduril technical rounds, sorted by frequency with recency and difficulty diagnostics.
| ID | Problem | Difficulty | Topic | Pattern | Acceptance | Frequency | Recency |
|---|---|---|---|---|---|---|---|
| 210 | Course Schedule II | Medium | Graphs | BFS / DFS / Topological Sort | 55.5% | 100.0% | 30d |
| 739 | Daily Temperatures | Medium | Stack / Queue | Monotonic Stack / Simulation | 68.7% | 100.0% | 3m |
| 200 | Number of Islands | Medium | Graphs | BFS / DFS / Topological Sort | 64.4% | 87.5% | 3m |
| 1024 | Video Stitching | Medium | Core DSA | Implementation / Reasoning | 52.7% | 87.5% | all |
| 314 | Binary Tree Vertical Order Traversal | Medium | Trees | DFS / BFS | 57.8% | 75.0% | 3m |
| 475 | Heaters | Medium | Core DSA | Implementation / Reasoning | 41.9% | 75.0% | 3m |
| 443 | String Compression | Medium | Strings | Hashing / Sliding Window | 60.0% | 75.0% | 3m |
| 827 | Making A Large Island | Hard | Graphs | BFS / DFS / Topological Sort | 56.6% | 75.0% | 3m |
| 1828 | Queries on Number of Points Inside a Circle | Medium | Core DSA | Implementation / Reasoning | 86.8% | 75.0% | 3m |
| 243 | Shortest Word Distance | Easy | Strings | Hashing / Sliding Window | 66.3% | 75.0% | 6m |
| 838 | Push Dominoes | Medium | Core DSA | Implementation / Reasoning | 63.0% | 75.0% | 6m |
| 140 | Word Break II | Hard | Strings; Dynamic Programming | Hashing / Sliding Window; State Transition | 55.6% | 75.0% | 6m |
| 1610 | Maximum Number of Visible Points | Hard | Arrays | Sorting / Prefix / Scan | 38.2% | 75.0% | 6m |
| 49 | Group Anagrams | Medium | Strings | Hashing / Sliding Window | 72.6% | 75.0% | all |
| 1268 | Search Suggestions System | Medium | Binary Search | Binary Search | 65.2% | 75.0% | all |
| 207 | Course Schedule | Medium | Graphs | BFS / DFS / Topological Sort | 51.4% | 75.0% | all |
| 244 | Shortest Word Distance II | Medium | Strings | Hashing / Sliding Window | 62.9% | 75.0% | all |
| 295 | Find Median from Data Stream | Hard | Heap | Priority Queue | 54.5% | 75.0% | all |
| 289 | Game of Life | Medium | Core DSA | Implementation / Reasoning | 72.6% | 62.5% | all |
| 981 | Time Based Key-Value Store | Medium | Core DSA | Implementation / Reasoning | 49.9% | 62.5% | all |
| 54 | Spiral Matrix | Medium | Arrays | Sorting / Prefix / Scan | 56.8% | 62.5% | all |
| 56 | Merge Intervals | Medium | Arrays | Sorting / Prefix / Scan | 51.8% | 62.5% | all |
| 23 | Merge k Sorted Lists | Hard | Arrays; Linked List; Heap | Sorting / Prefix / Scan; Two Pointers; Priority Queue | 59.6% | 62.5% | all |
| 818 | Race Car | Hard | Core DSA | Implementation / Reasoning | 44.7% | 62.5% | all |
| 253 | Meeting Rooms II | Medium | Greedy | Greedy | 52.7% | 62.5% | all |
| 2244 | Minimum Rounds to Complete All Tasks | Medium | Arrays | Sorting / Prefix / Scan | 63.3% | 62.5% | all |
| 951 | Flip Equivalent Binary Trees | Medium | Trees | DFS / BFS | 69.5% | 50.0% | all |
| 909 | Snakes and Ladders | Medium | Core DSA | Implementation / Reasoning | 48.1% | 50.0% | all |
| 287 | Find the Duplicate Number | Medium | Arrays | Sorting / Prefix / Scan | 64.3% | 50.0% | all |
| 708 | Insert into a Sorted Circular Linked List | Medium | Arrays; Linked List | Sorting / Prefix / Scan; Two Pointers | 38.6% | 50.0% | all |
| 529 | Minesweeper | Medium | Core DSA | Implementation / Reasoning | 68.8% | 50.0% | all |
| 20 | Valid Parentheses | Easy | Strings | Hashing / Sliding Window | 44.2% | 50.0% | all |
| 994 | Rotting Oranges | Medium | Core DSA | Implementation / Reasoning | 58.7% | 50.0% | all |
| 150 | Evaluate Reverse Polish Notation | Medium | Core DSA | Implementation / Reasoning | 57.8% | 50.0% | all |
| 721 | Accounts Merge | Medium | Arrays | Sorting / Prefix / Scan | 61.3% | 50.0% | all |
| 647 | Palindromic Substrings | Medium | Strings; Trees | Hashing / Sliding Window; DFS / BFS | 72.8% | 50.0% | all |
| 953 | Verifying an Alien Dictionary | Easy | Graphs | BFS / DFS / Topological Sort | 56.0% | 50.0% | all |
| 1091 | Shortest Path in Binary Matrix | Medium | Arrays | Sorting / Prefix / Scan | 51.5% | 50.0% | all |
| 114 | Flatten Binary Tree to Linked List | Medium | Trees; Linked List | DFS / BFS; Two Pointers | 70.7% | 37.5% | all |
| 33 | Search in Rotated Sorted Array | Medium | Arrays; Binary Search | Sorting / Prefix / Scan; Binary Search | 44.9% | 37.5% | all |
| 283 | Move Zeroes | Easy | Core DSA | Two Pointers | 63.8% | 37.5% | all |
| 694 | Number of Distinct Islands | Medium | Graphs | BFS / DFS / Topological Sort | 62.8% | 37.5% | all |
| 1 | Two Sum | Easy | Arrays | Sorting / Prefix / Scan; Two Pointers | 57.5% | 37.5% | all |
| 695 | Max Area of Island | Medium | Graphs | BFS / DFS / Topological Sort | 74.0% | 37.5% | all |
| 146 | LRU Cache | Medium | Design | Data Structure Design | 47.4% | 37.5% | all |
| 701 | Insert into a Binary Search Tree | Medium | Trees; Binary Search | DFS / BFS; Binary Search | 73.5% | 37.5% | all |
| 48 | Rotate Image | Medium | Arrays | Sorting / Prefix / Scan | 80.1% | 37.5% | all |
| 1762 | Buildings With an Ocean View | Medium | Core DSA | Implementation / Reasoning | 80.9% | 37.5% | all |
| 130 | Surrounded Regions | Medium | Core DSA | Implementation / Reasoning | 45.3% | 37.5% | all |
| 198 | House Robber | Medium | Dynamic Programming | State Transition | 53.2% | 37.5% | all |
| 1087 | Brace Expansion | Medium | Core DSA | Implementation / Reasoning | 66.9% | 37.5% | all |