Practice problems across 75+ categories
Practice problems frequently asked at Amazon • 3399 problems | 851 Easy | 1772 Medium | 756 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 706 | Delete Operation for Two Strings | Medium | StringDynamic Programming |
| 707 | Delete the Middle Node of a Linked List | Medium | Linked ListTwo Pointers |
| 708 | Delete Tree Nodes | Medium | ArrayTreeDepth-First Search |
| 709 | Delivering Boxes from Storage to Ports | Hard | ArrayDynamic ProgrammingSegment Tree |
| 710 | Department Top Three Salaries | Hard | Database |
| 711 | Depth of BST Given Insertion Order | Medium | ArrayTreeBinary Search Tree |
| 712 | Describe the Painting | Medium | ArrayHash TableSorting |
| 713 | Design a 3D Binary Matrix with Efficient Layer Tracking | Medium | ArrayHash TableDesign |
| 714 | Design a File Sharing System | Medium | Hash TableDesignSorting |
| 715 | Design a Food Rating System | Medium | ArrayHash TableString |
| 716 | Design A Leaderboard | Medium | Hash TableDesignSorting |
| 717 | Design a Number Container System | Medium | Hash TableDesignHeap (Priority Queue) |
| 718 | Design a Stack With Increment Operation | Medium | ArrayStackDesign |
| 719 | Design a Text Editor | Hard | Linked ListStringStack |
| 720 | Design a Todo List | Medium | ArrayHash TableString |
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