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1396 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 692. Top K Frequent Words | Medium | 27.7% | TopicsArrayHash TableStringTrieSortingHeap (Priority Queue)Bucket SortCounting |
| 787. Cheapest Flights Within K Stops | Medium | 27.7% | TopicsDynamic ProgrammingDepth-First SearchBreadth-First SearchGraph TheoryHeap (Priority Queue)Shortest Path |
| 907. Sum of Subarray Minimums | Medium | 27.7% | TopicsArrayDynamic ProgrammingStackMonotonic Stack |
| 1021. Remove Outermost Parentheses | Easy | 27.7% | TopicsStringStackBracket Sequences |
| 1197. Minimum Knight Moves | Medium | 27.7% | TopicsBreadth-First SearchHeuristic SearchBidirectional SearchA* Search |
| 1331. Rank Transform of an Array | Easy | 27.7% | TopicsArrayHash TableSorting |
| Page Recommendations | Medium | 27.7% | TopicsDatabase |
| Find a Corresponding Node of a Binary Tree in a Clone of That Tree | Easy | 27.7% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| 1493. Longest Subarray of 1's After Deleting One Element | Medium | 27.7% | TopicsArrayDynamic ProgrammingSliding Window |
| Diameter of N-Ary Tree | Medium | 27.7% | TopicsTreeDepth-First SearchDP on Trees |
| 1614. Maximum Nesting Depth of the Parentheses | Easy | 27.7% | TopicsStringStackBracket Sequences |
| 1748. Sum of Unique Elements | Easy | 27.7% | TopicsArrayHash TableCounting |
| 1790. Check if One String Swap Can Make Strings Equal | Easy | 27.7% | TopicsHash TableStringCounting |
| 2210. Count Hills and Valleys in an Array | Easy | 27.7% | TopicsArray |
| Partition List | Medium | 27.7% | TopicsLinked ListTwo Pointers |
| 901. Online Stock Span | Medium | 27.7% | TopicsStackDesignMonotonic StackData Stream |
| 258. Add Digits | Easy | 27.7% | TopicsMathSimulationNumber Theory |
| Immediate Food Delivery II | Medium | 27.7% | TopicsDatabase |
| 2965. Find Missing and Repeated Values | Easy | 27.7% | TopicsArrayHash TableMathMatrix |
| 441. Arranging Coins | Easy | 27.7% | TopicsMathBinary Search |
| 1423. Maximum Points You Can Obtain from Cards | Medium | 27.7% | TopicsArraySliding WindowPrefix Sum |
| 3527. Find the Most Common Response | Medium | 27.7% | TopicsArrayHash TableStringCounting |
| Longest Substring with At Most Two Distinct Characters | Medium | 27.7% | TopicsHash TableStringSliding Window |
| Convert Sorted List to Binary Search Tree | Medium | 26% | TopicsLinked ListDivide and ConquerTreeBinary Search TreeBinary Tree |
| One Edit Distance | Medium | 26% | TopicsTwo PointersString |
