2324 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 1679. Max Number of K-Sum Pairs | Medium | 21% | TopicsArrayHash TableTwo PointersSorting |
| 1736. Latest Time by Replacing Hidden Digits | Easy | 21% | TopicsStringGreedy |
| 1786. Number of Restricted Paths From First to Last Node | Medium | 21% | TopicsDynamic ProgrammingGraph TheoryTopological SortHeap (Priority Queue)Shortest PathDijkstra's Algorithm |
| 1793. Maximum Score of a Good Subarray | Hard | 21% | TopicsArrayTwo PointersBinary SearchStackMonotonic StackCartesian Tree |
| 1996. The Number of Weak Characters in the Game | Medium | 21% | TopicsArrayStackGreedySortingMonotonic Stack |
| 2178. Maximum Split of Positive Even Integers | Medium | 21% | TopicsMathBacktrackingGreedy |
| 2435. Paths in Matrix Whose Sum Is Divisible by K | Hard | 21% | TopicsArrayDynamic ProgrammingMatrix |
| 2476. Closest Nodes Queries in a Binary Search Tree | Medium | 21% | TopicsArrayBinary SearchTreeDepth-First SearchBinary Search TreeBinary Tree |
| 2556. Disconnect Path in a Binary Matrix by at Most One Flip | Medium | 21% | TopicsArrayDynamic ProgrammingDepth-First SearchBreadth-First SearchMatrix |
| 2563. Count the Number of Fair Pairs | Medium | 21% | TopicsArrayTwo PointersBinary SearchSorting |
| 3047. Find the Largest Area of Square Inside Two Rectangles | Medium | 21% | TopicsArrayMathGeometry |
| 3202. Find the Maximum Length of Valid Subsequence II | Medium | 21% | TopicsArrayDynamic Programming |
| 113. Path Sum II | Medium | 21% | TopicsBacktrackingTreeDepth-First SearchBinary Tree |
| 2073. Time Needed to Buy Tickets | Easy | 21% | TopicsArrayQueueSimulation |
| Valid Phone Numbers | Easy | 21% | TopicsShell |
| Smallest Rectangle Enclosing Black Pixels | Hard | 21% | TopicsArrayBinary SearchDepth-First SearchBreadth-First SearchMatrix |
| Patching Array | Hard | 21% | TopicsArrayGreedy |
| 2302. Count Subarrays With Score Less Than K | Hard | 21% | TopicsArrayBinary SearchSliding WindowPrefix Sum |
| 2331. Evaluate Boolean Binary Tree | Easy | 21% | TopicsTreeDepth-First SearchBinary Tree |
| Guess Number Higher or Lower II | Medium | 21% | TopicsMathDynamic ProgrammingMinimaxGame Theory |
| 2373. Largest Local Values in a Matrix | Easy | 21% | TopicsArrayMatrix |
| License Key Formatting | Easy | 21% | TopicsString |
| Beautiful Arrangement | Medium | 21% | TopicsArrayDynamic ProgrammingBacktrackingBit ManipulationBitmask |
| Redundant Connection II | Hard | 21% | TopicsDepth-First SearchBreadth-First SearchUnion-FindGraph Theory |
| 846. Hand of Straights | Medium | 21% | TopicsArrayHash TableGreedySorting |
