Returns the number of vertices reachable from the source vertex (or source vertices).
the number of vertices reachable from the source vertex (or source vertices).
Is there a directed path from the source vertex (or any of the source vertices) and vertex v
?
the vertex
true
if there is a directed path, false
otherwise.
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The
Directed
class represents a data type for determining the vertices reachable from a given source vertex s (or set of source vertices) in a digraph.For additional documentation, see Section 4.2 of Algorithms, 4th Edition by Robert Sedgewick and Kevin Wayne.