Practice problems across 75+ categories
Practice problems frequently asked at Array • 1947 problems | 398 Easy | 1049 Medium | 497 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 361 | Delete Duplicate Folders in System | Hard | ArrayHash TableString |
| 362 | Delete Greatest Value in Each Row | Easy | ArraySortingHeap (Priority Queue) |
| 363 | Delete Nodes And Return Forest | Medium | ArrayHash TableTree |
| 364 | Delete Nodes From Linked List Present in Array | Medium | ArrayHash TableLinked List |
| 365 | Delete Tree Nodes | Medium | ArrayTreeDepth-First Search |
| 366 | Delivering Boxes from Storage to Ports | Hard | ArrayDynamic ProgrammingSegment Tree |
| 367 | Depth of BST Given Insertion Order | Medium | ArrayTreeBinary Search Tree |
| 368 | Describe the Painting | Medium | ArrayHash TableSorting |
| 369 | Design a 3D Binary Matrix with Efficient Layer Tracking | Medium | ArrayHash TableDesign |
| 370 | Design a Food Rating System | Medium | ArrayHash TableString |
| 371 | Design a Stack With Increment Operation | Medium | ArrayStackDesign |
| 372 | Design a Todo List | Medium | ArrayHash TableString |
| 373 | Design an ATM Machine | Medium | ArrayGreedyDesign |
| 374 | Design an Expression Tree With Evaluate Function | Medium | ArrayMathStack |
| 375 | Design an Ordered Stream | Easy | ArrayHash TableDesign |
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