Graph is a data structure that describes the relationship between vertices. This data structure is the closest resemblance to our daily life.
Friendship Graph
The above figure, we can see that person A, D, F and E are all direct friends of C, while person B, and G are indirect friends of C. This example is a social graph of friendship.
In this mini course, I will introduce to you what is the “graph” data structure and some common algorithms that can be used to solve graph-related problems.
