> For the complete documentation index, see [llms.txt](https://liuzhenglaichn.gitbook.io/algorithm/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://liuzhenglaichn.gitbook.io/algorithm/sort/cycle-sort.md).

# Cycle Sort

## Problems

* [287. Find the Duplicate Number (Medium)](https://leetcode.com/problems/find-the-duplicate-number)

## Reference

* <https://www.geeksforgeeks.org/cycle-sort/>