70 curated coding interview questions directly asked in Intuit technical rounds, sorted by frequency with recency and difficulty diagnostics.
| ID | Problem | Difficulty | Topic | Pattern | Acceptance | Frequency | Recency |
|---|---|---|---|---|---|---|---|
| 322 | Coin Change | Medium | Dynamic Programming | State Transition | 48.4% | 100.0% | 3m |
| 772 | Basic Calculator III | Hard | Stack / Queue | Monotonic Stack / Simulation | 53.3% | 100.0% | 3m |
| 664 | Strange Printer | Hard | Core DSA | Implementation / Reasoning | 60.9% | 100.0% | 6m |
| 20 | Valid Parentheses | Easy | Strings | Hashing / Sliding Window | 44.2% | 87.5% | 3m |
| 3719 | Longest Balanced Subarray I | Medium | Arrays | Sorting / Prefix / Scan | 65.6% | 87.5% | 6m |
| 146 | LRU Cache | Medium | Design | Data Structure Design | 47.4% | 87.5% | all |
| 2467 | Most Profitable Path in a Tree | Medium | Trees | DFS / BFS | 67.3% | 87.5% | all |
| 628 | Maximum Product of Three Numbers | Easy | Arrays | Sorting / Prefix / Scan | 45.9% | 87.5% | all |
| 1411 | Number of Ways to Paint N × 3 Grid | Hard | Core DSA | Implementation / Reasoning | 80.5% | 75.0% | 6m |
| 1 | Two Sum | Easy | Arrays | Sorting / Prefix / Scan; Two Pointers | 57.5% | 75.0% | 6m |
| 3148 | Maximum Difference Score in a Grid | Medium | Arrays | Sorting / Prefix / Scan | 48.1% | 75.0% | 6m |
| 2812 | Find the Safest Path in a Grid | Medium | Core DSA | Implementation / Reasoning | 48.8% | 75.0% | 6m |
| 647 | Palindromic Substrings | Medium | Strings; Trees | Hashing / Sliding Window; DFS / BFS | 72.8% | 75.0% | 6m |
| 2915 | Length of the Longest Subsequence That Sums to Target | Medium | Arrays | Sorting / Prefix / Scan | 39.8% | 75.0% | all |
| 994 | Rotting Oranges | Medium | Core DSA | Implementation / Reasoning | 58.7% | 75.0% | all |
| 2234 | Maximum Total Beauty of the Gardens | Hard | Arrays | Sorting / Prefix / Scan | 30.2% | 75.0% | all |
| 3088 | Make String Anti-palindrome | Hard | Strings | Hashing / Sliding Window | 47.0% | 75.0% | all |
| 2453 | Destroy Sequential Targets | Medium | Core DSA | Implementation / Reasoning | 42.0% | 75.0% | all |
| 2489 | Number of Substrings With Fixed Ratio | Medium | Strings; Trees | Hashing / Sliding Window; DFS / BFS | 57.1% | 75.0% | all |
| 695 | Max Area of Island | Medium | Graphs | BFS / DFS / Topological Sort | 74.0% | 75.0% | all |
| 770 | Basic Calculator IV | Hard | Stack / Queue | Monotonic Stack / Simulation | 49.8% | 75.0% | all |
| 1698 | Number of Distinct Substrings in a String | Medium | Strings; Trees | Hashing / Sliding Window; DFS / BFS | 64.8% | 75.0% | all |
| 66 | Plus One | Easy | Core DSA | Implementation / Reasoning | 50.0% | 75.0% | all |
| 3619 | Count Islands With Total Value Divisible by K | Medium | Graphs | BFS / DFS / Topological Sort | 56.2% | 75.0% | all |
| 37 | Sudoku Solver | Hard | Backtracking | Backtracking | 65.5% | 62.5% | all |
| 139 | Word Break | Medium | Strings; Dynamic Programming | Hashing / Sliding Window; State Transition | 49.5% | 62.5% | all |
| 210 | Course Schedule II | Medium | Graphs | BFS / DFS / Topological Sort | 55.5% | 62.5% | all |
| 359 | Logger Rate Limiter | Easy | Design | Data Structure Design | 76.8% | 62.5% | all |
| 739 | Daily Temperatures | Medium | Stack / Queue | Monotonic Stack / Simulation | 68.7% | 62.5% | all |
| 22 | Generate Parentheses | Medium | Strings | Hashing / Sliding Window | 78.7% | 50.0% | all |
| 49 | Group Anagrams | Medium | Strings | Hashing / Sliding Window | 72.6% | 50.0% | all |
| 198 | House Robber | Medium | Dynamic Programming | State Transition | 53.2% | 50.0% | all |
| 300 | Longest Increasing Subsequence | Medium | Dynamic Programming | State Transition | 59.4% | 50.0% | all |
| 347 | Top K Frequent Elements | Medium | Heap | Priority Queue | 66.4% | 50.0% | all |
| 929 | Unique Email Addresses | Easy | Core DSA | Implementation / Reasoning | 67.9% | 50.0% | all |
| 354 | Russian Doll Envelopes | Hard | Core DSA | Implementation / Reasoning | 37.9% | 50.0% | all |
| 32 | Longest Valid Parentheses | Hard | Strings | Hashing / Sliding Window | 38.8% | 50.0% | all |
| 125 | Valid Palindrome | Easy | Strings | Hashing / Sliding Window | 53.3% | 50.0% | all |
| 56 | Merge Intervals | Medium | Arrays | Sorting / Prefix / Scan | 51.8% | 50.0% | all |
| 1931 | Painting a Grid With Three Different Colors | Hard | Core DSA | Implementation / Reasoning | 77.1% | 50.0% | all |
| 493 | Reverse Pairs | Hard | Core DSA | Implementation / Reasoning | 34.2% | 50.0% | all |
| 983 | Minimum Cost For Tickets | Medium | Arrays | Sorting / Prefix / Scan | 67.4% | 37.5% | all |
| 54 | Spiral Matrix | Medium | Arrays | Sorting / Prefix / Scan | 56.8% | 37.5% | all |
| 121 | Best Time to Buy and Sell Stock | Easy | Core DSA | Implementation / Reasoning | 56.8% | 37.5% | all |
| 155 | Min Stack | Medium | Stack / Queue | Monotonic Stack / Simulation | 58.2% | 37.5% | all |
| 238 | Product of Array Except Self | Medium | Arrays | Sorting / Prefix / Scan | 68.9% | 37.5% | all |
| 876 | Middle of the Linked List | Easy | Linked List | Two Pointers | 81.8% | 37.5% | all |
| 1319 | Number of Operations to Make Network Connected | Medium | Graphs | BFS / DFS / Topological Sort | 66.5% | 37.5% | all |
| 622 | Design Circular Queue | Medium | Stack / Queue; Design | Monotonic Stack / Simulation; Data Structure Design | 54.7% | 37.5% | all |
| 1537 | Get the Maximum Score | Hard | Arrays | Sorting / Prefix / Scan | 41.1% | 37.5% | all |
| 673 | Number of Longest Increasing Subsequence | Medium | Dynamic Programming | State Transition | 51.9% | 37.5% | all |
| 6 | Zigzag Conversion | Medium | Core DSA | Implementation / Reasoning | 54.2% | 37.5% | all |
| 85 | Maximal Rectangle | Hard | Core DSA | Implementation / Reasoning | 58.8% | 37.5% | all |
| 215 | Kth Largest Element in an Array | Medium | Arrays; Heap | Sorting / Prefix / Scan; Priority Queue | 68.9% | 37.5% | all |
| 1760 | Minimum Limit of Balls in a Bag | Medium | Arrays | Sorting / Prefix / Scan | 66.3% | 37.5% | all |
| 236 | Lowest Common Ancestor of a Binary Tree | Medium | Trees | DFS / BFS | 69.3% | 37.5% | all |
| 31 | Next Permutation | Medium | Backtracking | Backtracking | 45.3% | 37.5% | all |
| 283 | Move Zeroes | Easy | Core DSA | Two Pointers | 63.8% | 37.5% | all |
| 503 | Next Greater Element II | Medium | Stack / Queue | Monotonic Stack / Simulation | 68.4% | 37.5% | all |
| 759 | Employee Free Time | Hard | Core DSA | Implementation / Reasoning | 72.9% | 37.5% | all |
| 1647 | Minimum Deletions to Make Character Frequencies Unique | Medium | Arrays; Strings | Sorting / Prefix / Scan; Hashing / Sliding Window | 61.5% | 37.5% | all |
| 91 | Decode Ways | Medium | Dynamic Programming | State Transition | 38.0% | 37.5% | all |
| 787 | Cheapest Flights Within K Stops | Medium | Heap | Priority Queue | 41.8% | 37.5% | all |
| 1091 | Shortest Path in Binary Matrix | Medium | Arrays | Sorting / Prefix / Scan | 51.5% | 37.5% | all |
| 295 | Find Median from Data Stream | Hard | Heap | Priority Queue | 54.5% | 37.5% | all |
| 380 | Insert Delete GetRandom O(1) | Medium | Core DSA | Implementation / Reasoning | 55.4% | 37.5% | all |
| 465 | Optimal Account Balancing | Hard | Core DSA | Implementation / Reasoning | 50.5% | 37.5% | all |
| 468 | Validate IP Address | Medium | Strings | Hashing / Sliding Window | 28.3% | 37.5% | all |
| 729 | My Calendar I | Medium | Core DSA | Implementation / Reasoning | 58.3% | 37.5% | all |
| 70 | Climbing Stairs | Easy | Dynamic Programming | State Transition | 54.1% | 37.5% | all |