2324 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Longest Palindrome | Easy | 30.6% | TopicsHash TableStringGreedy |
| Third Maximum Number | Easy | 30.6% | TopicsArraySorting |
| Longest Palindromic Subsequence | Medium | 30.6% | TopicsStringDynamic Programming |
| 647. Palindromic Substrings | Medium | 30.6% | TopicsTwo PointersStringDynamic Programming |
| 2762. Continuous Subarrays | Medium | 30.6% | TopicsArrayQueueSliding WindowHeap (Priority Queue)Ordered SetMonotonic Queue |
| 827. Making A Large Island | Hard | 30.6% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
| 933. Number of Recent Calls | Easy | 30.6% | TopicsDesignQueueData Stream |
| 992. Subarrays with K Different Integers | Hard | 30.6% | TopicsArrayHash TableSliding WindowCounting |
| 1218. Longest Arithmetic Subsequence of Given Difference | Medium | 30.6% | TopicsArrayHash TableDynamic Programming |
| 1365. How Many Numbers Are Smaller Than the Current Number | Easy | 30.6% | TopicsArrayHash TableSortingCounting Sort |
| Range Sum Query 2D - Immutable | Medium | 30.6% | TopicsArrayDesignMatrixPrefix Sum |
| The Skyline Problem | Hard | 29.9% | TopicsArrayDivide and ConquerBinary Indexed TreeSegment TreeSweep LineSortingHeap (Priority Queue)Ordered Set |
| Sliding Window Median | Hard | 29.9% | TopicsArrayHash TableSliding WindowHeap (Priority Queue)Treap |
| Repeated String Match | Medium | 29.9% | TopicsStringString MatchingZ AlgorithmKnuth–Morris–Pratt AlgorithmBoyer–Moore String-Search Algorithm |
| 812. Largest Triangle Area | Easy | 29.9% | TopicsArrayMathGeometryPolygons |
| 1095. Find in Mountain Array | Hard | 29.9% | TopicsArrayBinary SearchInteractiveTernary Search |
| 1331. Rank Transform of an Array | Easy | 29.9% | TopicsArrayHash TableSorting |
| 1406. Stone Game III | Hard | 29.9% | TopicsArrayMathDynamic ProgrammingMinimaxGame TheoryZero-Sum Game |
| 1732. Find the Highest Altitude | Easy | 29.9% | TopicsArrayPrefix Sum |
| 2007. Find Original Array From Doubled Array | Medium | 29.9% | TopicsArrayHash TableGreedySorting |
| Array Prototype Last | Easy | 29.9% | Topics— |
| 91. Decode Ways | Medium | 29.9% | TopicsStringDynamic Programming |
| Word Break II | Hard | 29.9% | TopicsArrayHash TableStringDynamic ProgrammingBacktrackingTrieMemoization |
| Excel Sheet Column Title | Easy | 29.9% | TopicsMathString |
| 182. Duplicate Emails | Easy | 29.9% | TopicsDatabase |
