Amazon
2015 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 2181. Merge Nodes in Between Zeros | Medium | 5% | TopicsLinked ListSimulation |
| 2259. Remove Digit From Number to Maximize Result | Easy | 5% | TopicsStringGreedyEnumeration |
| 2246. Longest Path With Different Adjacent Characters | Hard | 5% | TopicsArrayStringTreeDepth-First SearchGraph TheoryTopological Sort |
| 2325. Decode the Message | Easy | 5% | TopicsHash TableString |
| 2449. Minimum Number of Operations to Make Arrays Similar | Hard | 5% | TopicsArrayGreedySorting |
| 2468. Split Message Based on Limit | Hard | 5% | TopicsStringEnumeration |
| 2537. Count the Number of Good Subarrays | Medium | 5% | TopicsArrayHash TableSliding Window |
| 2558. Take Gifts From the Richest Pile | Easy | 5% | TopicsArrayHeap (Priority Queue)Simulation |
| 2597. The Number of Beautiful Subsets | Medium | 5% | TopicsArrayHash TableMathDynamic ProgrammingBacktrackingSortingCombinatorics |
| Apply Transform Over Each Element in Array | Easy | 5% | Topics— |
| 2707. Extra Characters in a String | Medium | 5% | TopicsArrayHash TableStringDynamic ProgrammingTrie |
| 2706. Buy Two Chocolates | Easy | 5% | TopicsArrayGreedySorting |
| Display the First Three Rows | Easy | 5% | Topics— |
| 2942. Find Words Containing Character | Easy | 5% | TopicsArrayString |
| 3108. Minimum Cost Walk in Weighted Graph | Hard | 5% | TopicsArrayBit ManipulationUnion-FindGraph Theory |
| 3164. Find the Number of Good Pairs II | Medium | 5% | TopicsArrayHash Table |
| 1851. Minimum Interval to Include Each Query | Hard | 5% | TopicsArrayBinary SearchSweep LineSortingHeap (Priority Queue) |
| 2977. Minimum Cost to Convert String II | Hard | 5% | TopicsArrayStringDynamic ProgrammingGraph TheoryTrieShortest Path |
| Degree of an Array | Easy | 5% | TopicsArrayHash Table |
| 1261. Find Elements in a Contaminated Binary Tree | Medium | 5% | TopicsHash TableTreeDepth-First SearchBreadth-First SearchDesignBinary Tree |
| 1172. Dinner Plate Stacks | Hard | 5% | TopicsHash TableStackDesignHeap (Priority Queue) |
| 3105. Longest Strictly Increasing or Strictly Decreasing Subarray | Easy | 5% | TopicsArray |
| 2751. Robot Collisions | Hard | 5% | TopicsArrayStackSortingSimulation |
| 2491. Divide Players Into Teams of Equal Skill | Medium | 5% | TopicsArrayHash TableTwo PointersSorting |
| 866. Prime Palindrome | Medium | 5% | TopicsMathNumber TheoryPrimality Test |
