Amazon
2015 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Contains Duplicate III | Hard | 10.3% | TopicsArraySliding WindowSortingBucket SortOrdered Set |
| Patching Array | Hard | 10.3% | TopicsArrayGreedy |
| Queue Reconstruction by Height | Medium | 10.3% | TopicsArrayBinary Indexed TreeSegment TreeSorting |
| 453. Minimum Moves to Equal Array Elements | Medium | 10.3% | TopicsArrayMath |
| 454. 4Sum II | Medium | 10.3% | TopicsArrayHash Table |
| 462. Minimum Moves to Equal Array Elements II | Medium | 10.3% | TopicsArrayMathSorting |
| Validate IP Address | Medium | 10.3% | TopicsString |
| Keyboard Row | Easy | 10.3% | TopicsArrayHash TableString |
| Kill Process | Medium | 10.3% | TopicsArrayHash TableTreeDepth-First SearchBreadth-First Search |
| Swap Sex of Employees | Easy | 10.3% | TopicsDatabase |
| Dota2 Senate | Medium | 10.3% | TopicsStringGreedyQueue |
| Best Time to Buy and Sell Stock with Transaction Fee | Medium | 10.3% | TopicsArrayDynamic ProgrammingGreedy |
| 718. Maximum Length of Repeated Subarray | Medium | 10.3% | TopicsArrayBinary SearchDynamic ProgrammingSliding WindowRolling HashHash Function |
| Construct Quad Tree | Medium | 10.3% | TopicsArrayDivide and ConquerTreeMatrix |
| 812. Largest Triangle Area | Easy | 10.3% | TopicsArrayMathGeometryPolygons |
| 814. Binary Tree Pruning | Medium | 10.3% | TopicsTreeDepth-First SearchBinary Tree |
| 817. Linked List Components | Medium | 10.3% | TopicsArrayHash TableLinked List |
| 887. Super Egg Drop | Hard | 10.3% | TopicsMathBinary SearchDynamic Programming |
| 894. All Possible Full Binary Trees | Medium | 10.3% | TopicsDynamic ProgrammingTreeRecursionMemoizationBinary Tree |
| 935. Knight Dialer | Medium | 10.3% | TopicsDynamic Programming |
| 1029. Two City Scheduling | Medium | 10.3% | TopicsArrayGreedySortingHungarian AlgorithmSuccessive Shortest Path Algorithm |
| 1163. Last Substring in Lexicographical Order | Hard | 10.3% | TopicsTwo PointersStringLyndon Factorization |
| 1110. Delete Nodes And Return Forest | Medium | 10.3% | TopicsArrayHash TableTreeDepth-First SearchBinary Tree |
| 1550. Three Consecutive Odds | Easy | 10.3% | TopicsArray |
| 1323. Maximum 69 Number | Easy | 10.3% | TopicsMathGreedy |
