public Graph.Graph StrongComponent()
{
Graph.Graph g = new Graph.DirectedGraph(13);
g.AddEdge(4, 2);
g.AddEdge(2,3);
g.AddEdge(3,2);
g.AddEdge(6,0);
g.AddEdge(0,1);
g.AddEdge(2,0);
g.AddEdge(11,12);
g.AddEdge(12,9);
g.AddEdge(9,10);
g.AddEdge(9,11);
g.AddEdge(7,9);
g.AddEdge(10,12);
g.AddEdge(11,4);
g.AddEdge(4,3);
g.AddEdge(3,5);
g.AddEdge(6,8);
g.AddEdge(8,6);
g.AddEdge(5, 4);
g.AddEdge(0, 5);
g.AddEdge(6, 4);
g.AddEdge(6, 9);
g.AddEdge(7, 6);
return g;
}
public void DepthFirstOrder()
{
Graph.Graph g = new Graph.DirectedGraph(7);
g.AddEdge(0, 5);
g.AddEdge(0, 2);
g.AddEdge(0, 1);
g.AddEdge(3, 6);
g.AddEdge(3, 5);
g.AddEdge(3, 4);
g.AddEdge(5, 2);
g.AddEdge(6, 4);
g.AddEdge(6, 0);
g.AddEdge(3, 2);
g.AddEdge(1, 4);
Graph.DepthFirstOrder dfs = new Graph.DepthFirstOrder(g);
//4,1,2,5,0,6,3
//this doesn't come out in the order of the lecture but it doesn't matter
//it just has to be in in any order from bottom to top
//this result actually makes more sense because 2 goes no where and it is at the top
var postOrder = dfs.ReverseOrder().ToArray();
Assert.AreEqual(postOrder[0], 3);
Assert.AreEqual(postOrder[1], 6);
Assert.AreEqual(postOrder[2], 0);
Assert.AreEqual(postOrder[3], 1);
Assert.AreEqual(postOrder[4], 4);
Assert.AreEqual(postOrder[5], 5);
Assert.AreEqual(postOrder[6], 2);
}
public void DirectedBredthFirstSearchWorks()
{
Graph.Graph g = new Graph.DirectedGraph(9);
g.AddEdge(0, 2);
g.AddEdge(0, 1);
g.AddEdge(2, 4);
g.AddEdge(5, 0);
g.AddEdge(1, 2);
g.AddEdge(3, 2);
g.AddEdge(4, 3);
g.AddEdge(3, 5);
g.AddEdge(3, 5);
Graph.BreadthFirstSearch dfs = new Graph.BreadthFirstSearch(g, 0);
Assert.AreEqual(dfs.edgeTo[1], 0);
Assert.AreEqual(dfs.edgeTo[2], 0);
Assert.AreEqual(dfs.edgeTo[3], 4);
Assert.AreEqual(dfs.edgeTo[4], 2);
Assert.AreEqual(dfs.edgeTo[5], 3);
Assert.AreEqual(dfs.disTo[1], 1);
Assert.AreEqual(dfs.disTo[2], 1);
Assert.AreEqual(dfs.disTo[3], 3);
Assert.AreEqual(dfs.disTo[4], 2);
Assert.AreEqual(dfs.disTo[5], 4);
}
