Apple
282 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 72. Edit Distance | Medium | 39.6% | TopicsStringDynamic Programming |
| 2402. Meeting Rooms III | Hard | 39.6% | TopicsArrayHash TableSortingHeap (Priority Queue)Simulation |
| 55. Jump Game | Medium | 35.3% | TopicsArrayDynamic ProgrammingGreedy |
| 73. Set Matrix Zeroes | Medium | 35.3% | TopicsArrayHash TableMatrix |
| 75. Sort Colors | Medium | 35.3% | TopicsArrayTwo PointersSortingQuicksortBubble Sort |
| Best Time to Buy and Sell Stock III | Hard | 35.3% | TopicsArrayDynamic Programming |
| 143. Reorder List | Medium | 35.3% | TopicsLinked ListTwo PointersStackRecursion |
| 202. Happy Number | Easy | 35.3% | TopicsHash TableMathTwo PointersFloyd's Cycle Finding Algorithm |
| Sliding Window Maximum | Hard | 35.3% | TopicsArrayQueueSliding WindowHeap (Priority Queue)Monotonic QueueRange Minimum/Maximum Query |
| 268. Missing Number | Easy | 35.3% | TopicsArrayHash TableMathBinary SearchBit ManipulationSorting |
| Binary Tree Vertical Order Traversal | Medium | 35.3% | TopicsHash TableTreeDepth-First SearchBreadth-First SearchSortingBinary Tree |
| 322. Coin Change | Medium | 35.3% | TopicsArrayDynamic ProgrammingBreadth-First SearchKnapsack ProblemComplete Knapsack |
| Odd Even Linked List | Medium | 35.3% | TopicsLinked List |
| 332. Reconstruct Itinerary | Hard | 35.3% | TopicsArrayStringDepth-First SearchGraph TheorySortingHeap (Priority Queue)Eulerian CircuitEulerian PathSemi-Eulerian Graph |
| Kth Smallest Element in a Sorted Matrix | Medium | 35.3% | TopicsArrayBinary SearchSortingHeap (Priority Queue)Matrix |
| 412. Fizz Buzz | Easy | 35.3% | TopicsMathStringSimulation |
| Validate IP Address | Medium | 35.3% | TopicsString |
| 647. Palindromic Substrings | Medium | 35.3% | TopicsTwo PointersStringDynamic Programming |
| Random Pick with Weight | Medium | 35.3% | TopicsArrayMathBinary SearchPrefix SumRandomized |
| 895. Maximum Frequency Stack | Hard | 35.3% | TopicsHash TableStackDesignOrdered Set |
| Word Ladder II | Hard | 35.3% | TopicsHash TableStringBacktrackingBreadth-First SearchBidirectional Search |
| Alien Dictionary | Hard | 35.3% | TopicsArrayStringDepth-First SearchBreadth-First SearchGraph TheoryTopological SortDirected Acyclic Graph |
| 841. Keys and Rooms | Medium | 35.3% | TopicsDepth-First SearchBreadth-First SearchGraph Theory |
| Design Log Storage System | Medium | 35.3% | TopicsHash TableStringDesignOrdered Set |
| Read N Characters Given read4 II - Call Multiple Times | Hard | 35.3% | TopicsArraySimulationInteractive |
