2324 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 3870. Count Commas in Range | Easy | 10.6% | TopicsMath |
| 2472. Maximum Number of Non-overlapping Palindrome Substrings | Hard | 10.6% | TopicsTwo PointersStringDynamic ProgrammingGreedy |
| 3524. Find X Value of Array I | Medium | 10.6% | TopicsArrayMathDynamic Programming |
| Department Top Three Salaries | Hard | 8.2% | TopicsDatabase |
| Data Stream as Disjoint Intervals | Hard | 8.2% | TopicsHash TableBinary SearchUnion-FindDesignData StreamOrdered Set |
| Teemo Attacking | Easy | 8.2% | TopicsArraySimulation |
| Brick Wall | Medium | 8.2% | TopicsArrayHash Table |
| Max Stack | Hard | 8.2% | TopicsLinked ListStackDesignDoubly-Linked ListOrdered Set |
| 946. Validate Stack Sequences | Medium | 8.2% | TopicsArrayStackSimulation |
| 958. Check Completeness of a Binary Tree | Medium | 8.2% | TopicsTreeBreadth-First SearchBinary Tree |
| 1039. Minimum Score Triangulation of Polygon | Medium | 8.2% | TopicsArrayDynamic ProgrammingTriangulationPolygons |
| 1130. Minimum Cost Tree From Leaf Values | Medium | 8.2% | TopicsArrayDynamic ProgrammingStackGreedyMonotonic StackCartesian Tree |
| 1360. Number of Days Between Two Dates | Easy | 8.2% | TopicsMathString |
| 1425. Constrained Subsequence Sum | Hard | 8.2% | TopicsArrayDynamic ProgrammingQueueSliding WindowHeap (Priority Queue)Monotonic Queue |
| 1550. Three Consecutive Odds | Easy | 8.2% | TopicsArray |
| 1337. The K Weakest Rows in a Matrix | Easy | 8.2% | TopicsArrayBinary SearchSortingHeap (Priority Queue)Matrix |
| 1410. HTML Entity Parser | Medium | 8.2% | TopicsHash TableString |
| 1489. Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree | Hard | 8.2% | TopicsUnion-FindGraph TheorySortingMinimum Spanning TreeStrongly Connected ComponentPrim's AlgorithmKruskal's AlgorithmBorůvka's Algorithm |
| 2009. Minimum Number of Operations to Make Array Continuous | Hard | 8.2% | TopicsArrayHash TableBinary SearchSliding Window |
| 2258. Escape the Spreading Fire | Hard | 8.2% | TopicsArrayBinary SearchBreadth-First SearchMatrix |
| 2265. Count Nodes Equal to Average of Subtree | Medium | 8.2% | TopicsTreeDepth-First SearchBinary Tree |
| 2404. Most Frequent Even Element | Easy | 8.2% | TopicsArrayHash TableCounting |
| 2483. Minimum Penalty for a Shop | Medium | 8.2% | TopicsStringPrefix Sum |
| 2259. Remove Digit From Number to Maximize Result | Easy | 8.2% | TopicsStringGreedyEnumeration |
| 2352. Equal Row and Column Pairs | Medium | 8.2% | TopicsArrayHash TableMatrixSimulation |
