Amazon
2015 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 1334. Find the City With the Smallest Number of Neighbors at a Threshold Distance | Medium | 10.3% | TopicsDynamic ProgrammingGraph TheoryShortest PathDijkstra's AlgorithmBellman–Ford AlgorithmFloyd–Warshall Algorithm |
| 1356. Sort Integers by The Number of 1 Bits | Easy | 10.3% | TopicsArrayBit ManipulationSortingCounting |
| 1396. Design Underground System | Medium | 10.3% | TopicsHash TableStringDesign |
| 1534. Count Good Triplets | Easy | 10.3% | TopicsArrayEnumeration |
| 1790. Check if One String Swap Can Make Strings Equal | Easy | 10.3% | TopicsHash TableStringCounting |
| 1832. Check if the Sentence Is Pangram | Easy | 10.3% | TopicsHash TableString |
| 2073. Time Needed to Buy Tickets | Easy | 10.3% | TopicsArrayQueueSimulation |
| 2444. Count Subarrays With Fixed Bounds | Hard | 10.3% | TopicsArrayQueueSliding WindowMonotonic Queue |
| 2469. Convert the Temperature | Easy | 10.3% | TopicsMath |
| 2542. Maximum Subsequence Score | Medium | 10.3% | TopicsArrayGreedySortingHeap (Priority Queue) |
| 2653. Sliding Subarray Beauty | Medium | 10.3% | TopicsArrayHash TableSliding Window |
| Cache With Time Limit | Medium | 10.3% | Topics— |
| Counter II | Easy | 10.3% | Topics— |
| 2742. Painting the Walls | Hard | 10.3% | TopicsArrayDynamic Programming |
| 2997. Minimum Number of Operations to Make Array XOR Equal to K | Medium | 10.3% | TopicsArrayBit Manipulation |
| 3110. Score of a String | Easy | 10.3% | TopicsString |
| Group Sold Products By The Date | Easy | 10.3% | TopicsDatabase |
| 2976. Minimum Cost to Convert String I | Medium | 10.3% | TopicsArrayStringGraph TheoryShortest Path |
| 2685. Count the Number of Complete Components | Medium | 10.3% | TopicsDepth-First SearchBreadth-First SearchUnion-FindGraph Theory |
| 365. Water and Jug Problem | Medium | 10.3% | TopicsMathDepth-First SearchBreadth-First SearchBézout's LemmaEuclidean AlgorithmGreatest Common DivisorExtended Euclidean Algorithm |
| Minimum Index Sum of Two Lists | Easy | 10.3% | TopicsArrayHash TableString |
| 1606. Find Servers That Handled Most Number of Requests | Hard | 10.3% | TopicsArrayHeap (Priority Queue)SimulationOrdered Set |
| Longest Continuous Increasing Subsequence | Easy | 10.3% | TopicsArray |
| 794. Valid Tic-Tac-Toe State | Medium | 10.3% | TopicsArrayMatrix |
| 2192. All Ancestors of a Node in a Directed Acyclic Graph | Medium | 10.3% | TopicsDepth-First SearchBreadth-First SearchGraph TheoryTopological SortDirected Acyclic Graph |
