freeCodeCamp/guide/english/algorithms/graph-algorithms/index.md

---
title: Graph algorithms
---
## Graph algorithms

Graph algorithms are a set of instructions that traverse (visits nodes of a) graph.

Some algorithms are used to find a specific node or the path between two given nodes. 

### Why Graph Algorithms are Important

A graphs are very useful data structures which can be to model various problems. These algorithms have direct applications on Social Networking sites, State Machine modeling and many more.

### Some Common Graph Algorithms
Some of the most common graph algorithms are:

<a href='https://github.com/freecodecamp/guides/computer-science/data-structures/graphs/index.md' target='_blank' rel='nofollow'>Graphs</a>

<a href='https://github.com/freecodecamp/guides/tree/master/src/pages/algorithms/graph-algorithms/breadth-first-search/index.md' target='_blank' rel='nofollow'>Breadth First Search (BFS)</a>

<a href='https://github.com/freecodecamp/guides/tree/master/src/pages/algorithms/graph-algorithms/depth-first-search/index.md' target='_blank' rel='nofollow'>Depth First Search (DFS)</a>

<a href='https://github.com/freecodecamp/guides/tree/master/src/pages/algorithms/graph-algorithms/dijkstra/index.md' target='_blank' rel='nofollow'>Dijkstra</a>

<a href='https://github.com/freecodecamp/guides/tree/master/src/pages/algorithms/graph-algorithms/floyd-warshall-algorithm/index.md' target='_blank' rel='nofollow'>Floyd-Warshall Algorithm</a>

#### More Information

- [Graph Theory - Wikipedia](https://en.wikipedia.org/wiki/Graph_theory "Graph theory Wiki")
- [Basic Graph Algorithms](https://web.stanford.edu/class/cs97si/06-basic-graph-algorithms.pdf)