Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1201 | Kth Ancestor of a Tree Node | Hard | Binary SearchDynamic ProgrammingBit Manipulation |
| 1202 | Kth Distinct String in an Array | Easy | ArrayHash TableString |
| 1203 | Kth Smallest Amount With Single Denomination Combination | Hard | ArrayMathBinary Search |
| 1204 | Kth Smallest Element in a BST | Medium | TreeDepth-First SearchBinary Search Tree |
| 1205 | Kth Smallest Element in a Sorted Matrix | Medium | ArrayBinary SearchSorting |
| 1206 | Kth Smallest Instructions | Hard | ArrayMathDynamic Programming |
| 1207 | Kth Smallest Number in Multiplication Table | Hard | MathBinary Search |
| 1208 | Kth Smallest Path XOR Sum | Hard | ArrayTreeDepth-First Search |
| 1209 | Kth Smallest Product of Two Sorted Arrays | Hard | ArrayBinary Search |
| 1210 | Kth Smallest Subarray Sum | Medium | ArrayBinary SearchSliding Window |
| 1211 | Largest 1-Bordered Square | Medium | ArrayDynamic ProgrammingMatrix |
| 1212 | Largest 3-Same-Digit Number in String | Easy | String |
| 1213 | Largest BST Subtree | Medium | Dynamic ProgrammingTreeDepth-First Search |
| 1214 | Largest Color Value in a Directed Graph | Hard | Hash TableDynamic ProgrammingGraph |
| 1215 | Largest Combination With Bitwise AND Greater Than Zero | Medium | ArrayHash TableBit Manipulation |
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