public class DepthFirstPaths extends java.lang.Object
This implementation uses depth-first search. The constructor takes time proportional to V + E, where V is the number of vertices and E is the number of edges.
For additional documentation, see Section 4.1 of Algorithms, 4th Edition, by Robert Sedgewick and Kevin Wayne.
Constructor and Description |
---|
DepthFirstPaths(Graph G,
int s)
Computes a path between s and every other vertex in graph G.
|
Modifier and Type | Method and Description |
---|---|
boolean |
hasPathTo(int v)
Is there a path between the source vertex s and vertex v?
|
static void |
main(java.lang.String[] args)
Unit tests the DepthFirstPaths data type.
|
java.lang.Iterable<java.lang.Integer> |
pathTo(int v)
Returns a path between the source vertex s and vertex v, or
null if no such path.
|
public DepthFirstPaths(Graph G, int s)
G
- the graphs
- the source vertexpublic boolean hasPathTo(int v)
v
- the vertexpublic java.lang.Iterable<java.lang.Integer> pathTo(int v)
v
- the vertexpublic static void main(java.lang.String[] args)