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Suppose we perform Depth First Search ( DFS ) on a digraph G = ( V , E ) given by its adjacency list structure
Suppose we perform Depth First Search DFS on a digraph GVE
given by its adjacency list structure and label each node u in V
by du
and fu
indicating the starting and finishing times of DFSvisitu as we learned in the course.
Consider an arbitrary pair of distinct vertices u
and v
such that there is a directed path from u
to v
in G
Then that implies
If more than one choice is correct, select the red choice.
Question Answer
a
dufv
d
du
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