Amazon
2015 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 2551. Put Marbles in Bags | Hard | 32.4% | TopicsArrayGreedySortingHeap (Priority Queue) |
| 2790. Maximum Number of Groups With Increasing Length | Hard | 32.4% | TopicsArrayMathBinary SearchGreedySorting |
| 3676. Count Bowl Subarrays | Medium | 32.4% | TopicsArrayStackMonotonic Stack |
| 1648. Sell Diminishing-Valued Colored Balls | Medium | 32.4% | TopicsArrayMathBinary SearchGreedySortingHeap (Priority Queue) |
| 3872. Longest Arithmetic Sequence After Changing At Most One Element | Medium | 32.4% | TopicsArrayEnumeration |
| Unique Binary Search Trees | Medium | 31.4% | TopicsMathDynamic ProgrammingTreeBinary Search TreeBinary Tree |
| Customers Who Never Order | Easy | 31.4% | TopicsDatabase |
| Meeting Rooms | Easy | 31.4% | TopicsArraySortingQuicksort |
| Rotate Function | Medium | 31.4% | TopicsArrayMathDynamic Programming |
| Third Maximum Number | Easy | 31.4% | TopicsArraySorting |
| Find All Numbers Disappeared in an Array | Easy | 31.4% | TopicsArrayHash Table |
| 1721. Swapping Nodes in a Linked List | Medium | 31.4% | TopicsLinked ListTwo Pointers |
| Boundary of Binary Tree | Medium | 31.4% | TopicsTreeDepth-First SearchBinary Tree |
| 698. Partition to K Equal Sum Subsets | Medium | 31.4% | TopicsArrayDynamic ProgrammingBacktrackingBit ManipulationMemoizationBitmask |
| 841. Keys and Rooms | Medium | 31.4% | TopicsDepth-First SearchBreadth-First SearchGraph Theory |
| 853. Car Fleet | Medium | 31.4% | TopicsArrayStackSortingMonotonic Stack |
| 871. Minimum Number of Refueling Stops | Hard | 31.4% | TopicsArrayDynamic ProgrammingGreedyHeap (Priority Queue) |
| 933. Number of Recent Calls | Easy | 31.4% | TopicsDesignQueueData Stream |
| Immediate Food Delivery II | Medium | 31.4% | TopicsDatabase |
| 1344. Angle Between Hands of a Clock | Medium | 31.4% | TopicsMath |
| 1547. Minimum Cost to Cut a Stick | Hard | 31.4% | TopicsArrayDynamic ProgrammingSorting |
| 2272. Substring With Largest Variance | Hard | 31.4% | TopicsHash TableStringDynamic ProgrammingEnumeration |
| 2825. Make String a Subsequence Using Cyclic Increments | Medium | 31.4% | TopicsTwo PointersString |
| 3459. Length of Longest V-Shaped Diagonal Segment | Hard | 31.4% | TopicsArrayDynamic ProgrammingMemoizationMatrix |
| 3720. Lexicographically Smallest Permutation Greater Than Target | Medium | 31.4% | TopicsHash TableStringGreedyCountingEnumeration |
