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Let G = ( V , E ) be a directed graph. After algorithm DFS ( G ) has terminated, each vertex has a pre
Let G VE be a directed graph. After algorithm DFSG has terminated, each vertex has a pre and postnumber. Let u and v be two distinct vertices in V Assume that both of the following are true: There is a directed path in G from u to v preu prev Professor Lionel Messi claims that, in the DFSforest, v must be in the subtree of u Is Professor Messis claim correct? As always, justify your answer.
Let G VE be a directed graph. After algorithm DFSG has terminated,
each vertex has a pre and postnumber. Let u and v be two distinct vertices in V Assume
that both of the following are true:
There is a directed path in G from u to v
preu prev
Professor Lionel Messi claims that, in the DFSforest, v must be in the subtree of u
Is Professor Messis claim correct? As always, justify your answer.
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