2324 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 757. Set Intersection Size At Least Two | Hard | 12.8% | TopicsArrayGreedySorting |
| 3550. Smallest Index With Digit Sum Equal to Index | Easy | 12.8% | TopicsArrayMath |
| 3531. Count Covered Buildings | Medium | 12.8% | TopicsArrayHash TableSorting |
| 3499. Maximize Active Section with Trade I | Medium | 12.8% | TopicsStringEnumeration |
| 1390. Four Divisors | Medium | 12.8% | TopicsArrayMathPrime FactorizationSieve Theory |
| 1458. Max Dot Product of Two Subsequences | Hard | 12.8% | TopicsArrayDynamic ProgrammingLongest Common Subsequence |
| 2975. Maximum Square Area by Removing Fences From a Field | Medium | 12.8% | TopicsArrayHash TableEnumeration |
| 3348. Smallest Divisible Digit Product II | Hard | 12.8% | TopicsMathStringBacktrackingGreedyNumber Theory |
| Restaurant Growth | Medium | 12.8% | TopicsDatabase |
| 1665. Minimum Initial Energy to Finish Tasks | Hard | 12.8% | TopicsArrayGreedySorting |
| 3121. Count the Number of Special Characters II | Medium | 12.8% | TopicsHash TableString |
| 836. Rectangle Overlap | Easy | 12.8% | TopicsMathGeometry |
| 3568. Minimum Moves to Clean the Classroom | Medium | 12.8% | TopicsArrayHash TableBit ManipulationBreadth-First SearchMatrix |
| 3876. Construct Uniform Parity Array II | Medium | 12.8% | TopicsArrayMath |
| Binary Tree Level Order Traversal II | Medium | 10.6% | TopicsTreeBreadth-First SearchBinary Tree |
| 307. Range Sum Query - Mutable | Medium | 10.6% | TopicsArrayDivide and ConquerDesignBinary Indexed TreeSegment TreeSqrt Decomposition |
| 404. Sum of Left Leaves | Easy | 10.6% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| 454. 4Sum II | Medium | 10.6% | TopicsArrayHash Table |
| Valid Square | Medium | 10.6% | TopicsMathGeometry |
| Knight Probability in Chessboard | Medium | 10.6% | TopicsDynamic Programming |
| 819. Most Common Word | Easy | 10.6% | TopicsArrayHash TableStringCounting |
| 872. Leaf-Similar Trees | Easy | 10.6% | TopicsTreeDepth-First SearchBinary Tree |
| 1347. Minimum Number of Steps to Make Two Strings Anagram | Medium | 10.6% | TopicsHash TableStringCounting |
| 1496. Path Crossing | Easy | 10.6% | TopicsHash TableString |
| Find Users With Valid E-Mails | Easy | 10.6% | TopicsDatabase |
