Grokking the Coding Interview: Patterns for Coding Questions

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Introduction to Graph

A graph is a data structure that consists of a set of vertices (nodes) and a bunch of edges connecting these vertices. Graphs are widely used to model real-world scenarios where relationships and connections between entities must be represented. A Graph G (V, E) with five vertices (A, B, C, D, E) and six edges ((A, B), (B, C), (C, E), (E, D), (D, B), (D, A)) are shown in the following figure.

Graphs can become more complex as they grow and have many interconnected nodes and edges

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