2324 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 4016. Maximum Area of Two Non-Overlapping Square Submatrices | Medium | 5% | TopicsArrayBinary SearchDynamic ProgrammingMatrix |
| 3734. Lexicographically Smallest Palindromic Permutation Greater Than Target | Hard | 5% | TopicsTwo PointersStringEnumeration |
| 1491. Average Salary Excluding the Minimum and Maximum Salary | Easy | 5% | TopicsArraySorting |
| 3971. Maximum Total Value | Hard | 5% | TopicsArrayMathBinary SearchGreedy |
| 1567. Maximum Length of Subarray With Positive Product | Medium | 5% | TopicsArrayDynamic ProgrammingGreedy |
| 1876. Substrings of Size Three with Distinct Characters | Easy | 5% | TopicsHash TableStringSliding WindowCounting |
| Design a File Sharing System | Medium | 5% | TopicsHash TableDesignSortingHeap (Priority Queue)Data Stream |
| 3904. Smallest Stable Index II | Medium | 5% | TopicsArrayPrefix Sum |
| 1080. Insufficient Nodes in Root to Leaf Paths | Medium | 5% | TopicsTreeDepth-First SearchBinary Tree |
| 2825. Make String a Subsequence Using Cyclic Increments | Medium | 5% | TopicsTwo PointersString |
| 4021. Minimum Operations to Make a Rotated Palindrome I | Medium | 5% | TopicsMathStringEnumeration |
| Maximum Number of Accepted Invitations | Medium | 5% | TopicsArrayDepth-First SearchGraph TheoryMatrixMaximum FlowMaximum MatchingBipartite GraphEdmonds–Karp AlgorithmMPM AlgorithmPush-Relabel AlgorithmMatching (Graph)Flow NetworkDinic's Algorithm |
| 1818. Minimum Absolute Sum Difference | Medium | 5% | TopicsArrayBinary SearchSortingOrdered Set |
| 3701. Compute Alternating Sum | Easy | 5% | TopicsArraySimulation |
| 2343. Query Kth Smallest Trimmed Number | Medium | 5% | TopicsArrayStringDivide and ConquerSortingHeap (Priority Queue)Radix SortQuickselect |
| 1052. Grumpy Bookstore Owner | Medium | 5% | TopicsArraySliding Window |
| 623. Add One Row to Tree | Medium | 5% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| 3200. Maximum Height of a Triangle | Easy | 5% | TopicsArrayEnumeration |
| 2816. Double a Number Represented as a Linked List | Medium | 5% | TopicsLinked ListMathStack |
| 1338. Reduce Array Size to The Half | Medium | 5% | TopicsArrayHash TableGreedySortingHeap (Priority Queue) |
| 920. Number of Music Playlists | Hard | 5% | TopicsMathDynamic ProgrammingCombinatorics |
| 2223. Sum of Scores of Built Strings | Hard | 5% | TopicsStringBinary SearchRolling HashSuffix ArrayString MatchingHash FunctionZ AlgorithmKnuth–Morris–Pratt Algorithm |
| 2916. Subarrays Distinct Element Sum of Squares II | Hard | 5% | TopicsArrayHash TableBinary Indexed TreeSegment Tree |
| 4085. Find Root of a Colored Tree | Medium | 5% | Topics— |
