Grokking Data Structures & Algorithms for Coding Interviews
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Types of Graph
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Types of Graphs

Graphs can vary based on how their edges behave, whether they carry weights, and how their nodes are connected. Understanding graph types is key to choosing the right algorithm for your problem.

1. Undirected Graph

  • Edges have no direction.
  • If there’s an edge between A and B, you can go from A to B and also from B to A.
  • These graphs represent two-way relationships.

Example: A friendship network – if Alice is friends with Bob, Bob is also friends with Alice.

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