Amazon
2015 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 901. Online Stock Span | Medium | 45.2% | TopicsStackDesignMonotonic StackData Stream |
| 2055. Plates Between Candles | Medium | 45.2% | TopicsArrayStringBinary SearchPrefix Sum |
| 2149. Rearrange Array Elements by Sign | Medium | 45.2% | TopicsArrayTwo PointersSimulation |
| Divide Two Integers | Medium | 44.7% | TopicsMathBit Manipulation |
| Reverse Linked List II | Medium | 44.7% | TopicsLinked List |
| 493. Reverse Pairs | Hard | 44.7% | TopicsArrayBinary SearchDivide and ConquerBinary Indexed TreeSegment TreeMerge SortOrdered SetTreap |
| 787. Cheapest Flights Within K Stops | Medium | 44.7% | TopicsDynamic ProgrammingDepth-First SearchBreadth-First SearchGraph TheoryHeap (Priority Queue)Shortest Path |
| 3733. Minimum Time to Complete All Deliveries | Medium | 44.7% | TopicsMathBinary Search |
| Linked List Cycle II | Medium | 44.2% | TopicsHash TableLinked ListTwo PointersFloyd's Cycle Finding Algorithm |
| 230. Kth Smallest Element in a BST | Medium | 44.2% | TopicsTreeDepth-First SearchBinary Search TreeBinary Tree |
| House Robber III | Medium | 44.2% | TopicsDynamic ProgrammingTreeDepth-First SearchBinary TreeDP on Trees |
| 412. Fizz Buzz | Easy | 44.2% | TopicsMathStringSimulation |
| 435. Non-overlapping Intervals | Medium | 44.2% | TopicsArrayDynamic ProgrammingGreedySorting |
| 494. Target Sum | Medium | 44.2% | TopicsArrayDynamic ProgrammingBacktrackingKnapsack Problem0-1 Knapsack |
| 662. Maximum Width of Binary Tree | Medium | 44.2% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| 692. Top K Frequent Words | Medium | 44.2% | TopicsArrayHash TableStringTrieSortingHeap (Priority Queue)Bucket SortCounting |
| Random Pick with Weight | Medium | 44.2% | TopicsArrayMathBinary SearchPrefix SumRandomized |
| 1838. Frequency of the Most Frequent Element | Medium | 44.2% | TopicsArrayBinary SearchGreedySliding WindowSortingPrefix Sum |
| Minimum Path Sum | Medium | 43.7% | TopicsArrayDynamic ProgrammingMatrix |
| Simplify Path | Medium | 43.7% | TopicsStringStack |
| 90. Subsets II | Medium | 43.7% | TopicsArrayBacktrackingBit Manipulation |
| Employees Earning More Than Their Managers | Easy | 43.7% | TopicsDatabase |
| 680. Valid Palindrome II | Easy | 43.7% | TopicsTwo PointersStringGreedy |
| 1268. Search Suggestions System | Medium | 43.7% | TopicsArrayStringBinary SearchTrieSortingHeap (Priority Queue) |
| 2214. Minimum Health to Beat Game | Medium | 43.7% | TopicsArrayGreedy |
