Amazon
2015 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 1672. Richest Customer Wealth | Easy | 21.9% | TopicsArrayMatrix |
| 1764. Form Array by Concatenating Subarrays of Another Array | Medium | 21.9% | TopicsArrayTwo PointersGreedyString MatchingKnuth–Morris–Pratt Algorithm |
| 1760. Minimum Limit of Balls in a Bag | Medium | 21.9% | TopicsArrayBinary Search |
| Find Total Time Spent by Each Employee | Easy | 21.9% | TopicsDatabase |
| 1847. Closest Room | Hard | 21.9% | TopicsArrayBinary SearchSortingOrdered Set |
| 1923. Longest Common Subpath | Hard | 21.9% | TopicsArrayBinary SearchRolling HashSuffix ArrayHash FunctionSuffix AutomatonSuffix Tree |
| Check for Contradictions in Equations | Hard | 21.9% | TopicsArrayStringDepth-First SearchUnion-FindGraph Theory |
| 2012. Sum of Beauty in the Array | Medium | 21.9% | TopicsArray |
| 2075. Decode the Slanted Ciphertext | Medium | 21.9% | TopicsStringSimulation |
| 2100. Find Good Days to Rob the Bank | Medium | 21.9% | TopicsArrayDynamic ProgrammingPrefix Sum |
| 2109. Adding Spaces to a String | Medium | 21.9% | TopicsArrayTwo PointersStringSimulation |
| 2195. Append K Integers With Minimal Sum | Medium | 21.9% | TopicsArrayMathGreedySorting |
| 2197. Replace Non-Coprime Numbers in Array | Hard | 21.9% | TopicsArrayMathStackNumber TheoryLeast Common MultipleGreatest Common Divisor |
| 2256. Minimum Average Difference | Medium | 21.9% | TopicsArrayPrefix Sum |
| 2295. Replace Elements in an Array | Medium | 21.9% | TopicsArrayHash TableSimulation |
| 2322. Minimum Score After Removals on a Tree | Hard | 21.9% | TopicsArrayBit ManipulationTreeDepth-First Search |
| Product Sales Analysis IV | Medium | 21.9% | TopicsDatabase |
| Find Minimum Time to Finish All Jobs II | Medium | 21.9% | TopicsArrayGreedySorting |
| 2405. Optimal Partition of String | Medium | 21.9% | TopicsHash TableStringGreedy |
| Design SQL | Medium | 21.9% | TopicsArrayHash TableStringDesign |
| 2465. Number of Distinct Averages | Easy | 21.9% | TopicsArrayHash TableTwo PointersSorting |
| 2486. Append Characters to String to Make Subsequence | Medium | 21.9% | TopicsTwo PointersStringGreedy |
| 2482. Difference Between Ones and Zeros in Row and Column | Medium | 21.9% | TopicsArrayMatrixSimulation |
| Customers With Strictly Increasing Purchases | Hard | 21.9% | TopicsDatabase |
| Time Taken to Cross the Door | Hard | 21.9% | TopicsArrayQueueSimulation |
