Amazon
2015 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Brick Wall | Medium | 15.8% | TopicsArrayHash Table |
| Find the Closest Palindrome | Hard | 15.8% | TopicsMathString |
| Human Traffic of Stadium | Hard | 15.8% | TopicsDatabase |
| Number of Longest Increasing Subsequence | Medium | 15.8% | TopicsArrayDynamic ProgrammingBinary Indexed TreeSegment TreeLongest Increasing Subsequence |
| 744. Find Smallest Letter Greater Than Target | Easy | 15.8% | TopicsArrayBinary Search |
| 781. Rabbits in Forest | Medium | 15.8% | TopicsArrayHash TableMathGreedy |
| 792. Number of Matching Subsequences | Medium | 15.8% | TopicsArrayHash TableStringBinary SearchDynamic ProgrammingTrieSorting |
| 843. Guess the Word | Hard | 15.8% | TopicsArrayMathStringMinimaxInteractiveGame Theory |
| 846. Hand of Straights | Medium | 15.8% | TopicsArrayHash TableGreedySorting |
| 847. Shortest Path Visiting All Nodes | Hard | 15.8% | TopicsDynamic ProgrammingBit ManipulationBreadth-First SearchGraph TheoryBitmask |
| 874. Walking Robot Simulation | Medium | 15.8% | TopicsArrayHash TableSimulation |
| 888. Fair Candy Swap | Easy | 15.8% | TopicsArrayHash TableBinary SearchSorting |
| 950. Reveal Cards In Increasing Order | Medium | 15.8% | TopicsArrayQueueSortingSimulation |
| 993. Cousins in Binary Tree | Easy | 15.8% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| 1162. As Far from Land as Possible | Medium | 15.8% | TopicsArrayDynamic ProgrammingBreadth-First SearchMatrix |
| 1041. Robot Bounded In Circle | Medium | 15.8% | TopicsMathStringSimulation |
| 1140. Stone Game II | Medium | 15.8% | TopicsArrayMathDynamic ProgrammingMinimaxPrefix SumGame TheoryZero-Sum Game |
| 1169. Invalid Transactions | Medium | 15.8% | TopicsArrayHash TableStringSorting |
| Last Person to Fit in the Bus | Medium | 15.8% | TopicsDatabase |
| 1290. Convert Binary Number in a Linked List to Integer | Easy | 15.8% | TopicsLinked ListMath |
| 1376. Time Needed to Inform All Employees | Medium | 15.8% | TopicsTreeDepth-First SearchBreadth-First Search |
| 1448. Count Good Nodes in Binary Tree | Medium | 15.8% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| 1685. Sum of Absolute Differences in a Sorted Array | Medium | 15.8% | TopicsArrayMathPrefix Sum |
| The Number of Employees Which Report to Each Employee | Easy | 15.8% | TopicsDatabase |
| 1834. Single-Threaded CPU | Medium | 15.8% | TopicsArraySortingHeap (Priority Queue) |
