Visa
150 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Match Alphanumerical Pattern in Matrix I | Medium | 72.1% | TopicsArrayHash TableStringMatrix |
| 1353. Maximum Number of Events That Can Be Attended | Medium | 72.1% | TopicsArrayGreedySortingHeap (Priority Queue) |
| 2451. Odd String Difference | Easy | 72.1% | TopicsArrayHash TableString |
| 200. Number of Islands | Medium | 72.1% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
| 84. Largest Rectangle in Histogram | Hard | 72.1% | TopicsArrayStackMonotonic StackRange Minimum/Maximum Query |
| Number of Divisible Triplet Sums | Medium | 72.1% | TopicsArrayHash Table |
| 3915. Maximum Sum of Alternating Subsequence With Distance at Least K | Hard | 72.1% | TopicsArrayDynamic ProgrammingSegment Tree |
| 53. Maximum Subarray | Medium | 68.8% | TopicsArrayDivide and ConquerDynamic Programming |
| 2817. Minimum Absolute Difference Between Elements With Constraint | Medium | 65% | TopicsArrayBinary SearchOrdered Set |
| Beautiful Arrangement | Medium | 65% | TopicsArrayDynamic ProgrammingBacktrackingBit ManipulationBitmask |
| Exclusive Time of Functions | Medium | 65% | TopicsArrayStack |
| 54. Spiral Matrix | Medium | 60.6% | TopicsArrayMatrixSimulation |
| Minimum Time Difference | Medium | 60.6% | TopicsArrayMathStringSorting |
| 206. Reverse Linked List | Easy | 60.6% | TopicsLinked ListRecursion |
| Longest Valid Parentheses | Hard | 60.6% | TopicsStringDynamic ProgrammingStackBracket Sequences |
| 3552. Grid Teleportation Traversal | Medium | 60.6% | TopicsArrayHash TableBreadth-First SearchMatrix |
| 560. Subarray Sum Equals K | Medium | 60.6% | TopicsArrayHash TablePrefix Sum |
| 48. Rotate Image | Medium | 60.6% | TopicsArrayMathMatrix |
| 3649. Number of Perfect Pairs | Medium | 60.6% | TopicsArrayMathTwo PointersSorting |
| 2491. Divide Players Into Teams of Equal Skill | Medium | 60.6% | TopicsArrayHash TableTwo PointersSorting |
| 2484. Count Palindromic Subsequences | Hard | 60.6% | TopicsStringDynamic Programming |
| 347. Top K Frequent Elements | Medium | 55.2% | TopicsArrayHash TableDivide and ConquerSortingHeap (Priority Queue)Bucket SortCountingQuickselect |
| 21. Merge Two Sorted Lists | Easy | 55.2% | TopicsLinked ListRecursion |
| 75. Sort Colors | Medium | 55.2% | TopicsArrayTwo PointersSortingQuicksortBubble Sort |
| 1314. Matrix Block Sum | Medium | 55.2% | TopicsArrayMatrixPrefix Sum |
