> 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/line-sweep.md).

# Line Sweep

## Problems

* [1854. Maximum Population Year (Easy)](https://leetcode.com/problems/maximum-population-year/)
* [1851. Minimum Interval to Include Each Query (Hard)](https://leetcode.com/problems/minimum-interval-to-include-each-query/)
* [759. Employee Free Time (Hard)](https://leetcode.com/problems/employee-free-time/)
* [1943. Describe the Painting (Medium)](https://leetcode.com/problems/describe-the-painting/)