# 21. Heaps and Priority Queues

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