Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 301 | Compare Strings by Frequency of the Smallest Character | Medium | ArrayHash TableString |
| 302 | Complete Binary Tree Inserter | Medium | TreeBreadth-First SearchDesign |
| 303 | Complex Number Multiplication | Medium | MathStringSimulation |
| 304 | Compute the Rank as a Percentage | Medium | Database |
| 305 | Concatenated Divisibility | Hard | ArrayDynamic ProgrammingBit Manipulation |
| 306 | Concatenated Words | Hard | ArrayStringDynamic Programming |
| 307 | Concatenation of Array | Easy | ArraySimulation |
| 308 | Confirmation Rate | Medium | Database |
| 309 | Confusing Number II | Hard | MathBacktracking |
| 310 | Connecting Cities With Minimum Cost | Medium | Union FindGraphHeap (Priority Queue) |
| 311 | Consecutive Characters | Easy | String |
| 312 | Consecutive Numbers | Medium | Database |
| 313 | Consecutive Numbers Sum | Hard | MathEnumeration |
| 314 | Consecutive Transactions with Increasing Amounts | Hard | Database |
| 315 | Constrained Subsequence Sum | Hard | ArrayDynamic ProgrammingQueue |
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