Practice problems across 75+ categories
Practice problems frequently asked at Google • 3407 problems | 851 Easy | 1775 Medium | 761 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1216 | Flatten Nested List Iterator | Medium | StackTreeDepth-First Search |
| 1217 | Flight Occupancy and Waitlist Analysis | Medium | Database |
| 1218 | Flip Binary Tree To Match Preorder Traversal | Medium | TreeDepth-First SearchBinary Tree |
| 1219 | Flip Columns For Maximum Number of Equal Rows | Medium | ArrayHash TableMatrix |
| 1220 | Flip Equivalent Binary Trees | Medium | TreeDepth-First SearchBinary Tree |
| 1221 | Flip Game | Easy | String |
| 1222 | Flip Game II | Medium | MathDynamic ProgrammingBacktracking |
| 1223 | Flip String to Monotone Increasing | Medium | StringDynamic Programming |
| 1224 | Flipping an Image | Easy | ArrayTwo PointersBit Manipulation |
| 1225 | Flood Fill | Easy | ArrayDepth-First SearchBreadth-First Search |
| 1226 | Flower Planting With No Adjacent | Medium | Depth-First SearchBreadth-First SearchGraph |
| 1227 | Form a Chemical Bond | Easy | Database |
| 1228 | Form Array by Concatenating Subarrays of Another Array | Medium | ArrayTwo PointersGreedy |
| 1229 | Form Largest Integer With Digits That Add up to Target | Hard | ArrayDynamic Programming |
| 1230 | Form Smallest Number From Two Digit Arrays | Easy | ArrayHash TableEnumeration |
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