The root of a DAG is a vertex R such that every vertex of the DAG can
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The root of a DAG is a vertex R such that every vertex of the DAG can be reached by a directed path from R. Write an algorithm that takes a directed graph as input and determines the root (if there is one) for the graph. The running time of your algorithm should be Θ(|V| + |E|).
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Related Book For
Practical Introduction To Data Structures And Algorithm Analysis Java Edition
ISBN: 9780136609117
1st Edition
Authors: Clifford A. Shaffer
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