PayPal
93 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 1268. Search Suggestions System | Medium | 41.8% | TopicsArrayStringBinary SearchTrieSortingHeap (Priority Queue) |
| 1839. Longest Substring Of All Vowels in Order | Medium | 41.8% | TopicsStringSliding Window |
| 297. Serialize and Deserialize Binary Tree | Hard | 41.8% | TopicsStringTreeDepth-First SearchBreadth-First SearchDesignBinary Tree |
| 70. Climbing Stairs | Easy | 41.8% | TopicsMathDynamic ProgrammingMemoization |
| Missing Element in Sorted Array | Medium | 41.8% | TopicsArrayBinary Search |
| 412. Fizz Buzz | Easy | 41.8% | TopicsMathStringSimulation |
| 1209. Remove All Adjacent Duplicates in String II | Medium | 41.8% | TopicsStringStack |
| 1926. Nearest Exit from Entrance in Maze | Medium | 41.8% | TopicsArrayBreadth-First SearchMatrix |
| 1048. Longest String Chain | Medium | 41.8% | TopicsArrayHash TableTwo PointersStringDynamic ProgrammingSorting |
| 2858. Minimum Edge Reversals So Every Node Is Reachable | Hard | 41.8% | TopicsDynamic ProgrammingDepth-First SearchBreadth-First SearchGraph Theory |
| 57. Insert Interval | Medium | 41.8% | TopicsArray |
| Best Time to Buy and Sell Stock III | Hard | 41.8% | TopicsArrayDynamic Programming |
| 5. Longest Palindromic Substring | Medium | 41.8% | TopicsTwo PointersStringDynamic ProgrammingManacher |
| 39. Combination Sum | Medium | 41.8% | TopicsArrayBacktracking |
| 28. Find the Index of the First Occurrence in a String | Easy | 41.8% | TopicsTwo PointersStringString MatchingZ AlgorithmKnuth–Morris–Pratt AlgorithmBoyer–Moore String-Search Algorithm |
| 435. Non-overlapping Intervals | Medium | 41.8% | TopicsArrayDynamic ProgrammingGreedySorting |
| Decode String | Medium | 41.8% | TopicsStringStackRecursion |
| 169. Majority Element | Easy | 41.8% | TopicsArrayHash TableDivide and ConquerSortingCountingBoyer–Moore Majority Vote Algorithm |
