Amazon
2015 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 2000. Reverse Prefix of Word | Easy | 15.8% | TopicsTwo PointersStringStack |
| 2058. Find the Minimum and Maximum Number of Nodes Between Critical Points | Medium | 15.8% | TopicsLinked List |
| 2099. Find Subsequence of Length K With the Largest Sum | Easy | 15.8% | TopicsArrayHash TableSortingHeap (Priority Queue) |
| 2095. Delete the Middle Node of a Linked List | Medium | 15.8% | TopicsLinked ListTwo Pointers |
| 2364. Count Number of Bad Pairs | Medium | 15.8% | TopicsArrayHash TableMathCounting |
| Number of Unique Subjects Taught by Each Teacher | Easy | 15.8% | TopicsDatabase |
| 2769. Find the Maximum Achievable Number | Easy | 15.8% | TopicsMath |
| 2762. Continuous Subarrays | Medium | 15.8% | TopicsArrayQueueSliding WindowHeap (Priority Queue)Ordered SetMonotonic Queue |
| Nth Digit | Medium | 15.8% | TopicsMathBinary Search |
| 1221. Split a String in Balanced Strings | Easy | 15.8% | TopicsStringGreedyCounting |
| Out of Boundary Paths | Medium | 15.8% | TopicsDynamic Programming |
| 3217. Delete Nodes From Linked List Present in Array | Medium | 15.8% | TopicsArrayHash TableLinked List |
| 1625. Lexicographically Smallest String After Applying Operations | Medium | 15.8% | TopicsStringDepth-First SearchBreadth-First SearchEnumeration |
| 1331. Rank Transform of an Array | Easy | 15.8% | TopicsArrayHash TableSorting |
| K-th Smallest in Lexicographical Order | Hard | 15.8% | TopicsTrie |
| 1871. Jump Game VII | Medium | 15.8% | TopicsStringDynamic ProgrammingSliding WindowPrefix Sum |
| 1748. Sum of Unique Elements | Easy | 15.8% | TopicsArrayHash TableCounting |
| Maximum Sum of 3 Non-Overlapping Subarrays | Hard | 15.8% | TopicsArrayDynamic ProgrammingSliding WindowPrefix Sum |
| 761. Special Binary String | Hard | 15.8% | TopicsStringDivide and ConquerSorting |
| 2559. Count Vowel Strings in Ranges | Medium | 15.8% | TopicsArrayStringPrefix Sum |
| 2467. Most Profitable Path in a Tree | Medium | 15.8% | TopicsArrayTreeDepth-First SearchBreadth-First SearchGraph Theory |
| 2517. Maximum Tastiness of Candy Basket | Medium | 15.8% | TopicsArrayBinary SearchGreedySorting |
| Design Snake Game | Medium | 15.8% | TopicsArrayHash TableDesignQueueSimulation |
| 1609. Even Odd Tree | Medium | 15.8% | TopicsTreeBreadth-First SearchBinary Tree |
| 1415. The k-th Lexicographical String of All Happy Strings of Length n | Medium | 15.8% | TopicsStringBacktracking |
