Practice problems across 75+ categories
Practice problems frequently asked at Google • 3407 problems | 851 Easy | 1775 Medium | 761 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1201 | First Day Where You Have Been in All the Rooms | Medium | ArrayDynamic Programming |
| 1202 | First Letter Capitalization | Hard | Database |
| 1203 | First Letter Capitalization II | Hard | Database |
| 1204 | First Letter to Appear Twice | Easy | Hash TableStringBit Manipulation |
| 1205 | First Missing Positive | Hard | ArrayHash Table |
| 1206 | First Unique Character in a String | Easy | Hash TableStringQueue |
| 1207 | First Unique Number | Medium | ArrayHash TableDesign |
| 1208 | Fix Names in a Table | Easy | Database |
| 1209 | Fix Product Name Format | Easy | Database |
| 1210 | Fixed Point | Easy | ArrayBinary Search |
| 1211 | Fizz Buzz | Easy | MathStringSimulation |
| 1212 | Fizz Buzz Multithreaded | Medium | Concurrency |
| 1213 | Flatten 2D Vector | Medium | ArrayTwo PointersDesign |
| 1214 | Flatten a Multilevel Doubly Linked List | Medium | Linked ListDepth-First SearchDoubly-Linked List |
| 1215 | Flatten Deeply Nested Array | Medium | JavaScript |
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