# 19. Tree Traversals and Graphs

- [19.1 Tree Recap](/cs61b-textbook-spring-2026/19.-tree-traversals-and-graphs/19.1-tree-recap.md)
- [19.2 Tree Traversals](/cs61b-textbook-spring-2026/19.-tree-traversals-and-graphs/19.2-tree-traversals.md)
- [19.3 Graphs](/cs61b-textbook-spring-2026/19.-tree-traversals-and-graphs/19.3-graphs.md)
- [19.4 Graph Problems](/cs61b-textbook-spring-2026/19.-tree-traversals-and-graphs/19.4-graph-problems.md)