Amazon
2015 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 1833. Maximum Ice Cream Bars | Medium | 23.6% | TopicsArrayGreedySortingCounting Sort |
| Next Palindrome Using Same Digits | Hard | 23.6% | TopicsTwo PointersString |
| 1930. Unique Length-3 Palindromic Subsequences | Medium | 23.6% | TopicsHash TableStringBit ManipulationPrefix Sum |
| 2125. Number of Laser Beams in a Bank | Medium | 23.6% | TopicsArrayMathStringMatrix |
| 2207. Maximize Number of Subsequences in a String | Medium | 23.6% | TopicsStringGreedyPrefix Sum |
| 2222. Number of Ways to Select Buildings | Medium | 23.6% | TopicsStringDynamic ProgrammingPrefix Sum |
| 2266. Count Number of Texts | Medium | 23.6% | TopicsHash TableMathStringDynamic Programming |
| 2274. Maximum Consecutive Floors Without Special Floors | Medium | 23.6% | TopicsArraySorting |
| 2279. Maximum Bags With Full Capacity of Rocks | Medium | 23.6% | TopicsArrayGreedySorting |
| 2353. Design a Food Rating System | Medium | 23.6% | TopicsArrayHash TableStringDesignHeap (Priority Queue)Ordered Set |
| 2410. Maximum Matching of Players With Trainers | Medium | 23.6% | TopicsArrayTwo PointersGreedySorting |
| 2411. Smallest Subarrays With Maximum Bitwise OR | Medium | 23.6% | TopicsArrayBinary SearchBit ManipulationSliding Window |
| 2487. Remove Nodes From Linked List | Medium | 23.6% | TopicsLinked ListStackRecursionMonotonic Stack |
| 2497. Maximum Star Sum of a Graph | Medium | 23.6% | TopicsArrayGreedyGraph TheorySortingHeap (Priority Queue) |
| 2781. Length of the Longest Valid Substring | Hard | 23.6% | TopicsArrayHash TableStringSliding Window |
| 2830. Maximize the Profit as the Salesman | Medium | 23.6% | TopicsArrayHash TableBinary SearchDynamic ProgrammingSorting |
| 2870. Minimum Number of Operations to Make Array Empty | Medium | 23.6% | TopicsArrayHash TableGreedyCounting |
| 3092. Most Frequent IDs | Medium | 23.6% | TopicsArrayHash TableHeap (Priority Queue)Ordered Set |
| 3211. Generate Binary Strings Without Adjacent Zeros | Medium | 23.6% | TopicsStringBacktrackingBit Manipulation |
| Percentage of Users Attended a Contest | Easy | 23.6% | TopicsDatabase |
| 1975. Maximum Matrix Sum | Medium | 23.6% | TopicsArrayGreedyMatrix |
| 2054. Two Best Non-Overlapping Events | Medium | 23.6% | TopicsArrayBinary SearchDynamic ProgrammingSortingHeap (Priority Queue) |
| 769. Max Chunks To Make Sorted | Medium | 23.6% | TopicsArrayStackGreedySortingMonotonic Stack |
| 3455. Shortest Matching Substring | Hard | 23.6% | TopicsTwo PointersStringBinary SearchString Matching |
| Insertion Sort List | Medium | 23.6% | TopicsLinked ListSorting |
