2324 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 3529. Count Cells in Overlapping Horizontal and Vertical Substrings | Medium | 19.7% | TopicsArrayStringRolling HashString MatchingMatrixHash Function |
| 2942. Find Words Containing Character | Easy | 19.7% | TopicsArrayString |
| 1523. Count Odd Numbers in an Interval Range | Easy | 19.7% | TopicsMath |
| 3573. Best Time to Buy and Sell Stock V | Medium | 19.7% | TopicsArrayDynamic Programming |
| Trips and Users | Hard | 19.7% | TopicsDatabase |
| 811. Subdomain Visit Count | Medium | 19.7% | TopicsArrayHash TableStringCounting |
| Binary Number with Alternating Bits | Easy | 19.7% | TopicsBit Manipulation |
| 2327. Number of People Aware of a Secret | Medium | 19.7% | TopicsDynamic ProgrammingQueueSimulation |
| 3805. Count Caesar Cipher Pairs | Medium | 19.7% | TopicsArrayHash TableMathStringCounting |
| 3498. Reverse Degree of a String | Easy | 19.7% | TopicsStringSimulation |
| 3345. Smallest Divisible Digit Product I | Easy | 19.7% | TopicsMathEnumeration |
| Valid Number | Hard | 18.2% | TopicsString |
| Flatten 2D Vector | Medium | 18.2% | TopicsArrayTwo PointersDesignIterator |
| Closest Binary Search Tree Value II | Hard | 18.2% | TopicsTwo PointersStackTreeDepth-First SearchBinary Search TreeHeap (Priority Queue)Binary Tree |
| Peeking Iterator | Medium | 18.2% | TopicsArrayDesignIterator |
| Super Ugly Number | Medium | 18.2% | TopicsArrayMathDynamic Programming |
| Longest Substring with At Most K Distinct Characters | Medium | 18.2% | TopicsHash TableStringSliding Window |
| Design Tic-Tac-Toe | Medium | 18.2% | TopicsArrayHash TableDesignMatrixSimulation |
| Bomb Enemy | Medium | 18.2% | TopicsArrayDynamic ProgrammingMatrix |
| Plus One Linked List | Medium | 18.2% | TopicsLinked ListMath |
| All Paths from Source Lead to Destination | Medium | 18.2% | TopicsGraph TheoryTopological SortKosaraju's AlgorithmTarjan's SCC Algorithm |
| Word Abbreviation | Hard | 18.2% | TopicsArrayStringGreedyTrieSorting |
| Boundary of Binary Tree | Medium | 18.2% | TopicsTreeDepth-First SearchBinary Tree |
| 4 Keys Keyboard | Medium | 18.2% | TopicsMathDynamic Programming |
| Beautiful Arrangement II | Medium | 18.2% | TopicsArrayMath |
