Intro to Graphs - Directed vs Undirected Edges

Follow along: https://replit.com/@lizthedeveloper/Intro-to-Graphs
In this video we'll introduce graphs. We'll cover the conceptual difference between directed and undirected edges, and cover the differences between them inside of a function to add nodes to a graph.

If you haven't seen Linked Lists and Trees, that's where we cover what Nodes and Edges are in detail. In Trees we also cover DFS and BFS, so start here if you haven't done those.
Trees: https://www.youtube.com/watch?v=maBM4xFvYoo&list=PLZXAM5-21A3wEIQY-0NNOht5vdIzjY_e8
Linked Lists: https://www.youtube.com/watch?v=sDY0vZStQv8&list=PLZXAM5-21A3wVr2ganEYZ60hcD063dlDW

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