# Page Not Found

The URL `daily-algorithms/study/problems/3.-contains-duplicate` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [3. Contains Duplicate](https://algorithm.prettylog.com/top-75-leetcode-questions-to-save-your-time/problems/array/3.-contains-duplicate.md)
- [[Algo] Cycle in Graph (directed)](https://algorithm.prettylog.com/algorithm-problems/daily-algorithms/3.-cycle-in-a-graph/algo-cycle-in-graph-directed.md)
- [10. 11. Container With Most Water](https://algorithm.prettylog.com/top-75-leetcode-questions-to-save-your-time/problems/array/10.-11.-container-with-most-water.md)
- [13. [Counting Sort]: H-index](https://algorithm.prettylog.com/algorithm-problems/daily-algorithms/13.-counting-sort-h-index.md)
- [Daily Algorithms](https://algorithm.prettylog.com/algorithm-problems/daily-algorithms.md)

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```

The question should be specific, self-contained, and written in natural language.
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Use this to discover valid page paths or navigate the documentation structure.

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Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

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Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/top-75-leetcode-questions-to-save-your-time/problems/array/3.-contains-duplicate.md`).

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