Amazon
2015 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 2949. Count Beautiful Substrings II | Hard | 20.1% | TopicsHash TableMathStringNumber TheoryPrefix Sum |
| Distribute Candies Among Children III | Hard | 20.1% | TopicsMathCombinatorics |
| Most Expensive Item That Can Not Be Bought | Medium | 20.1% | TopicsMathDynamic ProgrammingNumber Theory |
| Count Numbers With Unique Digits II | Easy | 20.1% | TopicsHash TableMathDynamic Programming |
| 3113. Find the Number of Subarrays Where Boundary Elements Are Maximum | Hard | 20.1% | TopicsArrayBinary SearchStackMonotonic Stack |
| 3121. Count the Number of Special Characters II | Medium | 20.1% | TopicsHash TableString |
| 3194. Minimum Average of Smallest and Largest Elements | Easy | 20.1% | TopicsArrayTwo PointersSorting |
| Count Triplets with Even XOR Set Bits I | Easy | 20.1% | TopicsArrayBit Manipulation |
| Count Triplets with Even XOR Set Bits II | Medium | 20.1% | TopicsArrayBit Manipulation |
| 2477. Minimum Fuel Cost to Report to the Capital | Medium | 20.1% | TopicsTreeDepth-First SearchBreadth-First SearchGraph Theory |
| 1343. Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold | Medium | 20.1% | TopicsArraySliding Window |
| 1383. Maximum Performance of a Team | Hard | 20.1% | TopicsArrayGreedySortingHeap (Priority Queue) |
| 2948. Make Lexicographically Smallest Array by Swapping Elements | Medium | 20.1% | TopicsArrayUnion-FindSorting |
| 1462. Course Schedule IV | Medium | 20.1% | TopicsDepth-First SearchBreadth-First SearchGraph TheoryTopological Sort |
| 3174. Clear Digits | Easy | 20.1% | TopicsStringStackSimulation |
| 1475. Final Prices With a Special Discount in a Shop | Easy | 20.1% | TopicsArrayStackMonotonic Stack |
| 3453. Separate Squares I | Medium | 20.1% | TopicsArrayBinary Search |
| 3170. Lexicographically Minimum String After Removing Stars | Medium | 20.1% | TopicsHash TableStringStackGreedyHeap (Priority Queue) |
| 1749. Maximum Absolute Sum of Any Subarray | Medium | 20.1% | TopicsArrayDynamic Programming |
| 1200. Minimum Absolute Difference | Easy | 20.1% | TopicsArraySorting |
| 3201. Find the Maximum Length of Valid Subsequence I | Medium | 20.1% | TopicsArrayDynamic Programming |
| Fix Names in a Table | Easy | 20.1% | TopicsDatabase |
| 3480. Maximize Subarrays After Removing One Conflicting Pair | Hard | 20.1% | TopicsArraySegment TreeEnumerationPrefix Sum |
| 808. Soup Servings | Medium | 20.1% | TopicsMathDynamic ProgrammingProbability and Statistics |
| 3636. Threshold Majority Queries | Hard | 20.1% | TopicsArrayHash TableBinary SearchDivide and ConquerCountingPrefix Sum |
