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1396 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 1351. Count Negative Numbers in a Sorted Matrix | Easy | 22.3% | TopicsArrayBinary SearchMatrix |
| 1352. Product of the Last K Numbers | Medium | 22.3% | TopicsArrayMathDesignData StreamPrefix Sum |
| Customers Who Bought Products A and B but Not C | Medium | 22.3% | TopicsDatabase |
| 1460. Make Two Arrays Equal by Reversing Subarrays | Easy | 22.3% | TopicsArrayHash TableSorting |
| 1453. Maximum Number of Darts Inside of a Circular Dartboard | Hard | 22.3% | TopicsArrayMathGeometry |
| Apples & Oranges | Medium | 22.3% | TopicsDatabase |
| Faulty Sensor | Easy | 22.3% | TopicsArrayTwo Pointers |
| 1947. Maximum Compatibility Score Sum | Medium | 22.3% | TopicsArrayDynamic ProgrammingBacktrackingBit ManipulationBitmaskHungarian AlgorithmBipartite GraphSuccessive Shortest Path AlgorithmMatching (Graph)Perfect MatchingMinimum-Cost FlowFlow Network |
| Count Nodes Equal to Sum of Descendants | Medium | 22.3% | TopicsTreeDepth-First SearchBinary Tree |
| 2014. Longest Subsequence Repeated k Times | Hard | 22.3% | TopicsHash TableTwo PointersStringBacktrackingCountingEnumeration |
| Finding the Topic of Each Post | Hard | 22.3% | TopicsDatabase |
| 2289. Steps to Make Array Non-decreasing | Medium | 22.3% | TopicsArrayLinked ListDynamic ProgrammingStackMonotonic StackSimulation |
| 2365. Task Scheduler II | Medium | 22.3% | TopicsArrayHash TableSimulation |
| 2452. Words Within Two Edits of Dictionary | Medium | 22.3% | TopicsArrayStringTrie |
| 2596. Check Knight Tour Configuration | Medium | 22.3% | TopicsArrayDepth-First SearchBreadth-First SearchMatrixSimulation |
| Delete Duplicate Emails | Easy | 22.3% | TopicsDatabase |
| Product Price at a Given Date | Medium | 22.3% | TopicsDatabase |
| 931. Minimum Falling Path Sum | Medium | 22.3% | TopicsArrayDynamic ProgrammingMatrix |
| N-Queens II | Hard | 22.3% | TopicsBacktrackingAlgorithm X |
| 1832. Check if the Sentence Is Pangram | Easy | 22.3% | TopicsHash TableString |
| 1545. Find Kth Bit in Nth Binary String | Medium | 22.3% | TopicsStringRecursionSimulation |
| Count Binary Substrings | Easy | 22.3% | TopicsTwo PointersString |
| Inorder Successor in BST II | Medium | 22.3% | TopicsTreeBinary Search TreeBinary Tree |
| 1319. Number of Operations to Make Network Connected | Medium | 22.3% | TopicsDepth-First SearchBreadth-First SearchUnion-FindGraph Theory |
| Not Boring Movies | Easy | 22.3% | TopicsDatabase |
