Visa
150 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 66. Plus One | Easy | 38.6% | TopicsArrayMath |
| Image Smoother | Easy | 38.6% | TopicsArrayMatrix |
| 242. Valid Anagram | Easy | 38.6% | TopicsHash TableStringSorting |
| Best Time to Buy and Sell Stock III | Hard | 38.6% | TopicsArrayDynamic Programming |
| 162. Find Peak Element | Medium | 38.6% | TopicsArrayBinary Search |
| Sliding Window Maximum | Hard | 38.6% | TopicsArrayQueueSliding WindowHeap (Priority Queue)Monotonic QueueRange Minimum/Maximum Query |
| Candy Crush | Medium | 38.6% | TopicsArrayTwo PointersMatrixSimulation |
| 416. Partition Equal Subset Sum | Medium | 38.6% | TopicsArrayDynamic ProgrammingKnapsack Problem0-1 Knapsack |
| 1876. Substrings of Size Three with Distinct Characters | Easy | 38.6% | TopicsHash TableStringSliding WindowCounting |
| 3034. Number of Subarrays That Match a Pattern I | Medium | 38.6% | TopicsArrayRolling HashString MatchingHash Function |
| 72. Edit Distance | Medium | 38.6% | TopicsStringDynamic Programming |
| Brightest Position on Street | Medium | 38.6% | TopicsArraySortingPrefix SumOrdered Set |
| 217. Contains Duplicate | Easy | 38.6% | TopicsArrayHash TableSorting |
| 129. Sum Root to Leaf Numbers | Medium | 38.6% | TopicsTreeDepth-First SearchBinary Tree |
| LFU Cache | Hard | 38.6% | TopicsHash TableLinked ListDesignDoubly-Linked List |
| 300. Longest Increasing Subsequence | Medium | 38.6% | TopicsArrayBinary SearchDynamic ProgrammingLongest Increasing Subsequence |
| 451. Sort Characters By Frequency | Medium | 38.6% | TopicsHash TableStringSortingHeap (Priority Queue)Bucket SortCounting |
| Best Time to Buy and Sell Stock II | Medium | 38.6% | TopicsArrayDynamic ProgrammingGreedy |
| 238. Product of Array Except Self | Medium | 38.6% | TopicsArrayPrefix Sum |
| 1752. Check if Array Is Sorted and Rotated | Easy | 38.6% | TopicsArray |
| 215. Kth Largest Element in an Array | Medium | 38.6% | TopicsArrayDivide and ConquerSortingHeap (Priority Queue)Quickselect |
| 345. Reverse Vowels of a String | Easy | 38.6% | TopicsTwo PointersString |
| 680. Valid Palindrome II | Easy | 38.6% | TopicsTwo PointersStringGreedy |
| Ugly Number II | Medium | 38.6% | TopicsHash TableMathDynamic ProgrammingHeap (Priority Queue) |
| 62. Unique Paths | Medium | 38.6% | TopicsMathDynamic ProgrammingCombinatorics |
