Apple
282 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Exclusive Time of Functions | Medium | 22.3% | TopicsArrayStack |
| 567. Permutation in String | Medium | 22.3% | TopicsHash TableTwo PointersStringSliding Window |
| 918. Maximum Sum Circular Subarray | Medium | 22.3% | TopicsArrayDivide and ConquerDynamic ProgrammingQueueMonotonic Queue |
| Remove Duplicates from Sorted List II | Medium | 22.3% | TopicsLinked ListTwo Pointers |
| 889. Construct Binary Tree from Preorder and Postorder Traversal | Medium | 22.3% | TopicsArrayHash TableDivide and ConquerTreeBinary Tree |
| Convert Object to JSON String | Medium | 22.3% | Topics— |
| 863. All Nodes Distance K in Binary Tree | Medium | 22.3% | TopicsHash TableTreeDepth-First SearchBreadth-First SearchBinary Tree |
| All O`one Data Structure | Hard | 22.3% | TopicsHash TableLinked ListDesignDoubly-Linked List |
| 1392. Longest Happy Prefix | Hard | 22.3% | TopicsStringRolling HashString MatchingHash FunctionZ AlgorithmKnuth–Morris–Pratt Algorithm |
| 110. Balanced Binary Tree | Easy | 22.3% | TopicsTreeDepth-First SearchBinary Tree |
| Find Distance in a Binary Tree | Medium | 22.3% | TopicsHash TableTreeDepth-First SearchBreadth-First SearchBinary TreeBinary LiftingLowest Common Ancestor |
| 875. Koko Eating Bananas | Medium | 22.3% | TopicsArrayBinary Search |
| My Calendar I | Medium | 22.3% | TopicsArrayBinary SearchDesignSegment TreeOrdered Set |
| 704. Binary Search | Easy | 22.3% | TopicsArrayBinary Search |
| Basic Calculator III | Hard | 22.3% | TopicsMathStringStackRecursion |
| 417. Pacific Atlantic Water Flow | Medium | 22.3% | TopicsArrayDepth-First SearchBreadth-First SearchMatrix |
| 416. Partition Equal Subset Sum | Medium | 22.3% | TopicsArrayDynamic ProgrammingKnapsack Problem0-1 Knapsack |
| Building H2O | Medium | 22.3% | TopicsConcurrency |
| Spiral Matrix II | Medium | 22.3% | TopicsArrayMatrixSimulation |
| 1046. Last Stone Weight | Easy | 22.3% | TopicsArrayHeap (Priority Queue) |
| 78. Subsets | Medium | 22.3% | TopicsArrayBacktrackingBit Manipulation |
| Sparse Matrix Multiplication | Medium | 22.3% | TopicsArrayHash TableMatrixLinear Algebra |
| Rectangle Area | Medium | 22.3% | TopicsMathGeometry |
| Split Array Largest Sum | Hard | 22.3% | TopicsArrayBinary SearchDynamic ProgrammingGreedyPrefix Sum |
| 136. Single Number | Easy | 22.3% | TopicsArrayBit Manipulation |
