Amazon
2015 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 3573. Best Time to Buy and Sell Stock V | Medium | 13.2% | TopicsArrayDynamic Programming |
| 757. Set Intersection Size At Least Two | Hard | 13.2% | TopicsArrayGreedySorting |
| 1015. Smallest Integer Divisible by K | Medium | 13.2% | TopicsHash TableMathPigeonhole Principle |
| 756. Pyramid Transition Matrix | Medium | 13.2% | TopicsHash TableStringBacktrackingBit Manipulation |
| 961. N-Repeated Element in Size 2N Array | Easy | 13.2% | TopicsArrayHash TablePigeonhole Principle |
| 1411. Number of Ways to Paint N × 3 Grid | Hard | 13.2% | TopicsDynamic ProgrammingGraph Coloring |
| 2943. Maximize Area of Square Hole in Grid | Medium | 13.2% | TopicsArraySorting |
| 3315. Construct the Minimum Bitwise Array II | Medium | 13.2% | TopicsArrayBit Manipulation |
| 3651. Minimum Cost Path with Teleportations | Hard | 13.2% | TopicsArrayDynamic ProgrammingMatrix |
| 3719. Longest Balanced Subarray I | Medium | 13.2% | TopicsArrayHash TableDivide and ConquerSegment TreePrefix Sum |
| 3714. Longest Balanced Substring II | Medium | 13.2% | TopicsHash TableStringPrefix Sum |
| 988. Smallest String Starting From Leaf | Medium | 13.2% | TopicsStringBacktrackingTreeDepth-First SearchBinary Tree |
| 1461. Check If a String Contains All Binary Codes of Size K | Medium | 13.2% | TopicsHash TableStringBit ManipulationRolling HashHash FunctionDirected Acyclic Graph |
| 1536. Minimum Swaps to Arrange a Binary Grid | Medium | 13.2% | TopicsArrayGreedyMatrix |
| 1009. Complement of Base 10 Integer | Easy | 13.2% | TopicsBit Manipulation |
| 2661. First Completely Painted Row or Column | Medium | 13.2% | TopicsArrayHash TableMatrix |
| 856. Score of Parentheses | Medium | 13.2% | TopicsStringStackBracket Sequences |
| 3737. Count Subarrays With Majority Element I | Medium | 13.2% | TopicsArrayHash TableDivide and ConquerSegment TreeMerge SortCountingPrefix Sum |
| 2812. Find the Safest Path in a Grid | Medium | 13.2% | TopicsArrayBinary SearchBreadth-First SearchUnion-FindHeap (Priority Queue)Matrix |
| 1314. Matrix Block Sum | Medium | 13.2% | TopicsArrayMatrixPrefix Sum |
| 1386. Cinema Seat Allocation | Medium | 13.2% | TopicsArrayHash TableGreedyBit Manipulation |
| 3622. Check Divisibility by Digit Sum and Product | Easy | 13.2% | TopicsMath |
| 835. Image Overlap | Medium | 13.2% | TopicsArrayMatrix |
| 3524. Find X Value of Array I | Medium | 13.2% | TopicsArrayMathDynamic Programming |
| Binary Tree Level Order Traversal II | Medium | 10.3% | TopicsTreeBreadth-First SearchBinary Tree |
