2324 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 1239. Maximum Length of a Concatenated String with Unique Characters | Medium | 5% | TopicsArrayStringBacktrackingBit Manipulation |
| 3452. Sum of Good Numbers | Easy | 5% | TopicsArray |
| 1787. Make the XOR of All Segments Equal to Zero | Hard | 5% | TopicsArrayHash TableDynamic ProgrammingBit ManipulationCounting |
| 3405. Count the Number of Arrays with K Matching Adjacent Elements | Hard | 5% | TopicsMathCombinatoricsFermat's Little Theorem |
| Shortest Word Distance II | Medium | 5% | TopicsArrayHash TableTwo PointersStringDesign |
| 3085. Minimum Deletions to Make String K-Special | Medium | 5% | TopicsHash TableStringGreedySortingCounting |
| 3588. Find Maximum Area of a Triangle | Medium | 5% | TopicsArrayHash TableMathGreedyGeometryEnumeration |
| 2389. Longest Subsequence With Limited Sum | Easy | 5% | TopicsArrayBinary SearchGreedySortingPrefix Sum |
| 3049. Earliest Second to Mark Indices II | Hard | 5% | TopicsArrayBinary SearchGreedyHeap (Priority Queue) |
| 1402. Reducing Dishes | Hard | 5% | TopicsArrayDynamic ProgrammingGreedySorting |
| 2233. Maximum Product After K Increments | Medium | 5% | TopicsArrayGreedyHeap (Priority Queue) |
| 491. Non-decreasing Subsequences | Medium | 5% | TopicsArrayHash TableBacktrackingBit Manipulation |
| 3046. Split the Array | Easy | 5% | TopicsArrayHash TableCounting |
| 2386. Find the K-Sum of an Array | Hard | 5% | TopicsArraySortingHeap (Priority Queue) |
| 3613. Minimize Maximum Component Cost | Medium | 5% | TopicsBinary SearchUnion-FindGraph TheorySorting |
| 1416. Restore The Array | Hard | 5% | TopicsStringDynamic Programming |
| Chunk Array | Easy | 5% | Topics— |
| Count Different Palindromic Subsequences | Hard | 5% | TopicsStringDynamic Programming |
| 2322. Minimum Score After Removals on a Tree | Hard | 5% | TopicsArrayBit ManipulationTreeDepth-First Search |
| 1013. Partition Array Into Three Parts With Equal Sum | Easy | 5% | TopicsArrayGreedy |
| 3619. Count Islands With Total Value Divisible by K | Medium | 5% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
| 3589. Count Prime-Gap Balanced Subarrays | Medium | 5% | TopicsArrayMathQueueSliding WindowNumber TheoryMonotonic Queue |
| 1370. Increasing Decreasing String | Easy | 5% | TopicsHash TableStringCounting |
| 3645. Maximum Total from Optimal Activation Order | Medium | 5% | TopicsArrayTwo PointersGreedySortingHeap (Priority Queue) |
| 3366. Minimum Array Sum | Medium | 5% | TopicsArrayDynamic Programming |
