2324 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 1008. Construct Binary Search Tree from Preorder Traversal | Medium | 22.3% | TopicsArrayStackTreeBinary Search TreeMonotonic StackBinary Tree |
| 1219. Path with Maximum Gold | Medium | 22.3% | TopicsArrayBacktrackingMatrix |
| 3174. Clear Digits | Easy | 22.3% | TopicsStringStackSimulation |
| 1290. Convert Binary Number in a Linked List to Integer | Easy | 22.3% | TopicsLinked ListMath |
| 1492. The kth Factor of n | Medium | 22.3% | TopicsMathNumber TheoryPrime Factorization |
| 3043. Find the Length of the Longest Common Prefix | Medium | 22.3% | TopicsArrayHash TableStringTrie |
| 3318. Find X-Sum of All K-Long Subarrays I | Easy | 22.3% | TopicsArrayHash TableSliding WindowHeap (Priority Queue) |
| 3327. Check if DFS Strings Are Palindromes | Hard | 22.3% | TopicsArrayHash TableStringTreeDepth-First SearchHash Function |
| 1049. Last Stone Weight II | Medium | 22.3% | TopicsArrayDynamic ProgrammingKnapsack Problem0-1 Knapsack |
| 3347. Maximum Frequency of an Element After Performing Operations II | Hard | 22.3% | TopicsArrayBinary SearchSliding WindowSortingPrefix Sum |
| Percentage of Users Attended a Contest | Easy | 22.3% | TopicsDatabase |
| 3408. Design Task Manager | Medium | 22.3% | TopicsHash TableDesignHeap (Priority Queue)Ordered Set |
| Perfect Number | Easy | 22.3% | TopicsMath |
| 3472. Longest Palindromic Subsequence After at Most K Operations | Medium | 22.3% | TopicsStringDynamic Programming |
| 1695. Maximum Erasure Value | Medium | 22.3% | TopicsArrayHash TableSliding Window |
| Best Time to Buy and Sell Stock with Transaction Fee | Medium | 22.3% | TopicsArrayDynamic ProgrammingGreedy |
| 3477. Fruits Into Baskets II | Easy | 22.3% | TopicsArrayBinary SearchSegment TreeSimulationOrdered Set |
| 3010. Divide an Array Into Subarrays With Minimum Cost I | Easy | 22.3% | TopicsArraySortingEnumeration |
| 3721. Longest Balanced Subarray II | Hard | 22.3% | TopicsArrayHash TableDivide and ConquerSegment TreePrefix Sum |
| 3871. Count Commas in Range II | Medium | 22.3% | TopicsMath |
| 3Sum Smaller | Medium | 21% | TopicsArrayTwo PointersBinary SearchSorting |
| Verify Preorder Serialization of a Binary Tree | Medium | 21% | TopicsStringStackTreeBinary Tree |
| Max Sum of Rectangle No Larger Than K | Hard | 21% | TopicsArrayBinary SearchMatrixPrefix SumOrdered Set |
| Perfect Rectangle | Hard | 21% | TopicsArrayHash TableMathGeometrySweep Line |
| Sentence Screen Fitting | Medium | 21% | TopicsArrayStringDynamic Programming |
