> For the complete documentation index, see [llms.txt](https://cs61b-2.gitbook.io/cs61b-textbook/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cs61b-2.gitbook.io/cs61b-textbook/21.-heaps-and-priority-queues.md).

# 21. Heaps and Priority Queues

- [21.1 Priority Queues](https://cs61b-2.gitbook.io/cs61b-textbook/21.-heaps-and-priority-queues/21.1-priority-queues.md)
- [21.2 Heaps](https://cs61b-2.gitbook.io/cs61b-textbook/21.-heaps-and-priority-queues/21.2-heaps.md)
- [21.3 PQ Implementation](https://cs61b-2.gitbook.io/cs61b-textbook/21.-heaps-and-priority-queues/21.3-pq-implementation.md)
- [21.4 Summary](https://cs61b-2.gitbook.io/cs61b-textbook/21.-heaps-and-priority-queues/21.4-summary.md)
- [21.5 Exercises](https://cs61b-2.gitbook.io/cs61b-textbook/21.-heaps-and-priority-queues/21.5-exercises.md)