On Sep 13, 7:27 pm, Dave <dave_and_da...@juno.com> wrote:
> Suppose the graph consists of three nodes in a triangle. You number
> your starting node at level 1 and the other two at level 2. How do you
> proceed?

 If the three nodes are a triangle then in a *depth* search, there is
node 1 and one of the  neighbors is   number two and the neighbor of
number two is number three.   So in this case you have numbers 1,2 and
3.  Similarly, in a complete graph with n vertexes you
label them from 1 to n.

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