QUESTIONS BY COMPANY
Browse LeetCode problems frequently asked by Circle. Filter by difficulty and timeframe to focus your interview prep.
Last updated: 20 May 2026
| Problem | Difficulty | Frequency | Topics | |
|---|---|---|---|---|
| Simple Bank System | MEDIUM | 100% | ArrayHash TableDesignSimulation | |
| Design In-Memory File System | HARD | 100% | Hash TableStringDesignTrieSorting |
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