Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 691 | Domino and Tromino Tiling | Medium | Dynamic Programming |
| 692 | Dot Product of Two Sparse Vectors | Medium | ArrayHash TableTwo Pointers |
| 693 | Dota2 Senate | Medium | StringGreedyQueue |
| 694 | Double a Number Represented as a Linked List | Medium | Linked ListMathStack |
| 695 | Double Modular Exponentiation | Medium | ArrayMathSimulation |
| 696 | Drop Duplicate Rows | Easy | Database |
| 697 | Drop Type 1 Orders for Customers With Type 0 Orders | Medium | Database |
| 698 | Dungeon Game | Hard | ArrayDynamic ProgrammingMatrix |
| 699 | Duplicate Emails | Easy | Database |
| 700 | Dynamic Unpivoting of a Table | Hard | Database |
| 701 | Earliest Possible Day of Full Bloom | Hard | ArrayGreedySorting |
| 702 | Earliest Second to Mark Indices I | Medium | ArrayBinary Search |
| 703 | Earliest Second to Mark Indices II | Hard | ArrayBinary SearchGreedy |
| 704 | Eat Pizzas! | Medium | ArrayGreedySorting |
| 705 | Edit Distance | Medium | StringDynamic Programming |
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