Depth First Search (DFS) Explained: Algorithm, Examples, and Code
In this video, I explain the fundamental ideas behind the Depth First Search (DFS) graph algorithm. We first introduce the concept of a graph traversal. We then go through several examples of DFS to provide intuition. Afterwards, we then go through both a recursive and iterative implementation with provided code. We discuss the differences between the implementation and also make a distinction between a preorder and post order DFS traversal. We then finish the video off with some practical and fun applications of depth first search in graph theory.
0:00 Intro and Preview
0:50 Graph Traversal
1:20 DFS Walkthrough and Examples
6:26 Recursive Implementation
11:08 Iterative Implementation
15:06 Preorder vs Postorder DFS
17:01 DFS Applications
Support: / reducible
This video wouldn't be possible without the open source manim library created by 3blue1brown: https://github.com/3b1b/manim
Here is link to the repository that contains the code used to generate the animations in this video: https://github.com/nipunramk/Reducible
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