Amazon
2015 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 2145. Count the Hidden Sequences | Medium | 26.6% | TopicsArrayPrefix Sum |
| 2134. Minimum Swaps to Group All 1's Together II | Medium | 26.6% | TopicsArraySliding Window |
| 2262. Total Appeal of A String | Hard | 26.6% | TopicsHash TableStringDynamic Programming |
| 2270. Number of Ways to Split Array | Medium | 26.6% | TopicsArrayPrefix Sum |
| 2244. Minimum Rounds to Complete All Tasks | Medium | 26.6% | TopicsArrayHash TableGreedyCounting |
| 2336. Smallest Number in Infinite Set | Medium | 26.6% | TopicsHash TableDesignHeap (Priority Queue)Ordered Set |
| 2337. Move Pieces to Obtain a String | Medium | 26.6% | TopicsTwo PointersString |
| 2375. Construct Smallest Number From DI String | Medium | 26.6% | TopicsStringBacktrackingStackGreedy |
| 2386. Find the K-Sum of an Array | Hard | 26.6% | TopicsArraySortingHeap (Priority Queue) |
| 2641. Cousins in Binary Tree II | Medium | 26.6% | TopicsHash TableTreeDepth-First SearchBreadth-First SearchBinary Tree |
| Create a DataFrame from List | Easy | 26.6% | Topics— |
| 3014. Minimum Number of Pushes to Type Word I | Easy | 26.6% | TopicsMathStringGreedy |
| 3016. Minimum Number of Pushes to Type Word II | Medium | 26.6% | TopicsHash TableStringGreedySortingCounting |
| 3120. Count the Number of Special Characters I | Easy | 26.6% | TopicsHash TableString |
| 3366. Minimum Array Sum | Medium | 26.6% | TopicsArrayDynamic Programming |
| 3396. Minimum Number of Operations to Make Elements in Array Distinct | Easy | 26.6% | TopicsArrayHash Table |
| 3407. Substring Matching Pattern | Easy | 26.6% | TopicsStringString Matching |
| 3461. Check If Digits Are Equal in String After Operations I | Easy | 26.6% | TopicsMathStringSimulationCombinatoricsNumber Theory |
| 2226. Maximum Candies Allocated to K Children | Medium | 26.6% | TopicsArrayBinary Search |
| 3645. Maximum Total from Optimal Activation Order | Medium | 26.6% | TopicsArrayTwo PointersGreedySortingHeap (Priority Queue) |
| 3637. Trionic Array I | Easy | 26.6% | TopicsArray |
| 3634. Minimum Removals to Balance Array | Medium | 26.6% | TopicsArrayBinary SearchSliding WindowSorting |
| 3920. Maximize Fixed Points After Deletions | Hard | 26.6% | TopicsArrayBinary SearchSorting |
| 3948. Lexicographically Maximum MEX Array | Hard | 26.6% | TopicsArrayHash TableGreedyQueue |
| 4026. Maximum Gap Between Stations | Medium | 26.6% | TopicsTwo PointersStringGreedy |
