Apple
282 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 211. Design Add and Search Words Data Structure | Medium | 35.3% | TopicsStringDepth-First SearchDesignTrie |
| 2065. Maximum Path Quality of a Graph | Hard | 35.3% | TopicsArrayBacktrackingGraph Theory |
| Convert Sorted Array to Binary Search Tree | Easy | 35.3% | TopicsArrayDivide and ConquerTreeBinary Search TreeBinary Tree |
| 329. Longest Increasing Path in a Matrix | Hard | 35.3% | TopicsArrayDynamic ProgrammingDepth-First SearchBreadth-First SearchGraph TheoryTopological SortMemoizationMatrixDirected Acyclic Graph |
| 1087. Brace Expansion | Medium | 35.3% | TopicsStringBacktrackingStackBreadth-First SearchSorting |
| Maximum Swap | Medium | 35.3% | TopicsMathGreedy |
| 4Sum | Medium | 29.7% | TopicsArrayTwo PointersSorting |
| 39. Combination Sum | Medium | 29.7% | TopicsArrayBacktracking |
| 100. Same Tree | Easy | 29.7% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| Evaluate Reverse Polish Notation | Medium | 29.7% | TopicsArrayMathStack |
| Intersection of Two Linked Lists | Easy | 29.7% | TopicsHash TableLinked ListTwo Pointers |
| 188. Best Time to Buy and Sell Stock IV | Hard | 29.7% | TopicsArrayDynamic Programming |
| 204. Count Primes | Medium | 29.7% | TopicsArrayMathEnumerationNumber TheoryPrimality TestSieve TheoryPrime Number Sieve |
| 217. Contains Duplicate | Easy | 29.7% | TopicsArrayHash TableSorting |
| Basic Calculator | Hard | 29.7% | TopicsMathStringStackRecursion |
| 242. Valid Anagram | Easy | 29.7% | TopicsHash TableStringSorting |
| H-Index | Medium | 29.7% | TopicsArraySortingCounting Sort |
| 349. Intersection of Two Arrays | Easy | 29.7% | TopicsArrayHash TableTwo PointersBinary SearchSorting |
| Find Largest Value in Each Tree Row | Medium | 29.7% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| 523. Continuous Subarray Sum | Medium | 29.7% | TopicsArrayHash TableMathPrefix SumPigeonhole Principle |
| 692. Top K Frequent Words | Medium | 29.7% | TopicsArrayHash TableStringTrieSortingHeap (Priority Queue)Bucket SortCounting |
| 973. K Closest Points to Origin | Medium | 29.7% | TopicsArrayMathDivide and ConquerGeometrySortingHeap (Priority Queue)QuickselectK-D Tree |
| 1011. Capacity To Ship Packages Within D Days | Medium | 29.7% | TopicsArrayBinary Search |
| 3074. Apple Redistribution into Boxes | Easy | 29.7% | TopicsArrayGreedySorting |
| 759. Employee Free Time | Hard | 29.7% | TopicsArraySweep LineSortingHeap (Priority Queue) |
