public void bfsTest()
{
using (StreamReader sr = new StreamReader(@"E:\Study\ALG2017\ALGRKC\dataSelf\tinyCG.txt"))
{
Graph g = new Graph(sr);
int source = 0;
BreadthFirstPaths bfp = new BreadthFirstPaths(g, source);
bfp.bfs(g, source);
for (int i = 0; i < g.V(); i++)
{
Console.Write(source + " to " + i + " : ");
if (bfp.HasPathTo(i))
{
foreach (int v in bfp.PathTo(i))
{
if (v == source)
{
Console.Write(source);
}
else
{
Console.Write("-" + v);
}
}
Console.WriteLine();
}
else
{
Console.WriteLine("no path");
}
}
}
}
public void BFS_MultiSource_Test()
{
var sources = new HashSet <int>()
{
0, 3
};
BreadthFirstPaths BFS = new BreadthFirstPaths(basicGraph, sources);
Assert.IsTrue(BFS.HasPathTo(3));
Assert.IsFalse(BFS.HasPathTo(8));
var path = BFS.PathTo(7);
var SB = new StringBuilder();
foreach (int v in path)
{
SB.Append(v.ToString());
}
Assert.AreEqual("027", SB.ToString());
Stack <int> path4 = (Stack <int>)BFS.PathTo(4); //We know that returned type is an stack
Assert.AreEqual(3, path4.Pop());
}
private static void SeverLink(Graph graph, int skyNetLocation)
{
var bfp = new BreadthFirstPaths(graph, skyNetLocation);
var shortestExit = -1;
var exitLength = Int32.MaxValue;
foreach (var exit in graph.Exits)
{
if (bfp.HasPathTo(exit))
{
var currLen = bfp.PathTo(exit).Count();
if (currLen < exitLength)
{
exitLength = currLen;
shortestExit = exit;
}
}
}
var targetNode = bfp.PathTo(shortestExit).Skip(1).First();
graph.RemoveEdge(skyNetLocation, targetNode);
Console.WriteLine("{0} {1}", skyNetLocation, targetNode);
}
static void Main(string[] args)
{
Graph g = GetGraph();
int[] paths;
Paths path;
path = new DepthFirstPaths(g, 0);
paths = path.PathTo(4);
path = new BreadthFirstPaths(g, 0);
paths = path.PathTo(4);
Console.ReadKey();
}
public void BFS_Test()
{
BreadthFirstPaths BFS = new BreadthFirstPaths(basicGraph, 0);
Assert.IsTrue(BFS.HasPathTo(3));
Assert.IsFalse(BFS.HasPathTo(8));
var path = BFS.PathTo(7);
var SB = new StringBuilder();
foreach (int v in path)
{
SB.Append(v.ToString());
}
Assert.AreEqual("027", SB.ToString());
}
public void BreadthFirstPathsTest()
{
var g = GraphSample();
var bfs = new BreadthFirstPaths(g, 0);
Assert.True(bfs.HasPathTo(5));
var path = bfs.PathTo(5);
int[] result = { 5, 0 };
int i = 0;
foreach (int v in path)
{
Assert.Equal(result[i], v);
i++;
}
}
public void TestCase1()
{
var g = new Graph(6);
g.AddEdge(0, 5);
g.AddEdge(2, 4);
g.AddEdge(2, 3);
g.AddEdge(1, 2);
g.AddEdge(0, 1);
g.AddEdge(3, 4);
g.AddEdge(3, 5);
g.AddEdge(0, 2);
var bfsPaths = new BreadthFirstPaths(g, 0);
var expected = new int[] { 0, 2, 4 };
var actual = bfsPaths.PathTo(4).ToArray();
Assert.Equal(expected, actual);
}
public void Run()
{
Console.WriteLine("Choose file:"); // Prompt
Console.WriteLine("1 - tinyCG.txt"); // Prompt
Console.WriteLine("2 - mediumG.txt"); // Prompt
Console.WriteLine("3 - largeG.zip"); // Prompt
Console.WriteLine("or quit"); // Prompt
var fileNumber = Console.ReadLine();
var fieName = string.Empty;
switch (fileNumber)
{
case "1":
fieName = "tinyCG.txt";
break;
case "2":
fieName = "mediumG.txt";
break;
case "3":
fieName = "largeG.zip";
break;
case "quit":
return;
default:
return;
}
var @in = new In($"Files\\Graphs\\{fieName}");
var lines = !fieName.EndsWith("zip") ? @in.ReadAllLines() : @in.ReadAllLinesFromZip();
var lineIterator = 0;
var v = 0;
var e = 0;
var edges = new List <EdgeU>();
foreach (var line in lines)
{
if (lineIterator == 0)
{
v = Convert.ToInt32(line);
}
if (lineIterator == 1)
{
e = Convert.ToInt32(line);
}
if (lineIterator > 1)
{
var lineSplitted = line.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
var ve = Convert.ToInt32(lineSplitted[0]);
var we = Convert.ToInt32(lineSplitted[1]);
var edge = new EdgeU(ve, we);
edges.Add(edge);
}
lineIterator++;
}
var graph = new Graph(v, e, edges);
if (fileNumber != "3")
{
Console.WriteLine(graph);
}
const int s = 0;
var bfs1 = new BreadthFirstPaths(graph, s);
for (var vi = 0; vi < graph.V; vi++)
{
if (bfs1.HasPathTo(vi))
{
Console.Write($"{s} to {vi}: ");
foreach (int x in bfs1.PathTo(vi))
{
if (x == s)
{
Console.Write(x);
}
else
{
Console.Write($"-{x}");
}
}
Console.WriteLine();
}
else
{
Console.WriteLine($"{s} to {v}: not connected{Environment.NewLine}");
}
if (vi >= 1 && fileNumber == "3")
{
break;
}
}
//Console.WriteLine("------------------------------------------------");
Console.ReadLine();
}
public void Testing()
{
var graph = new UndirectedGraph(13);
graph.InsertEdge(0, 5);
graph.InsertEdge(4, 3);
graph.InsertEdge(0, 1);
graph.InsertEdge(9, 12);
graph.InsertEdge(6, 4);
graph.InsertEdge(5, 4);
graph.InsertEdge(0, 2);
graph.InsertEdge(11, 12);
graph.InsertEdge(9, 10);
graph.InsertEdge(0, 6);
graph.InsertEdge(7, 8);
graph.InsertEdge(9, 11);
graph.InsertEdge(5, 3);
var degree = graph.VertexDegree(5);
var maxDegree = graph.GraphMaxVertexDegree();
var avgDegree = graph.GraphAverageVertexDegree();
var selfLoops = graph.GraphNumberOfSelfLoops();
var graph2 = new UndirectedGraph(6);
graph2.InsertEdge(0, 5);
graph2.InsertEdge(2, 4);
graph2.InsertEdge(2, 3);
graph2.InsertEdge(1, 2);
graph2.InsertEdge(0, 1);
graph2.InsertEdge(3, 4);
graph2.InsertEdge(3, 5);
graph2.InsertEdge(0, 2);
var depthFirstSearch = new DepthFirstSearch(graph2, 0);
var depthFirstSearchCount = depthFirstSearch.Count();
var depthFirstSearchTest0 = depthFirstSearch.Marked(0);
var depthFirstSearchTest1 = depthFirstSearch.Marked(1);
var depthFirstSearchTest2 = depthFirstSearch.Marked(2);
var depthFirstSearchTest3 = depthFirstSearch.Marked(3);
var depthFirstSearchTest4 = depthFirstSearch.Marked(4);
var depthFirstSearchTest5 = depthFirstSearch.Marked(5);
var depthFirstSearchNonRecursive = new DepthFirstSearchNonRecursive(graph2, 0);
var depthFirstSearchNonRecursiveCount = depthFirstSearchNonRecursive.Count();
var depthFirstSearchNonRecursiveTest0 = depthFirstSearchNonRecursive.Marked(0);
var depthFirstSearchNonRecursiveTest1 = depthFirstSearchNonRecursive.Marked(1);
var depthFirstSearchNonRecursiveTest2 = depthFirstSearchNonRecursive.Marked(2);
var depthFirstSearchNonRecursiveTest3 = depthFirstSearchNonRecursive.Marked(3);
var depthFirstSearchNonRecursiveTest4 = depthFirstSearchNonRecursive.Marked(4);
var depthFirstSearchNonRecursiveTest5 = depthFirstSearchNonRecursive.Marked(5);
var depthFirstSearchTestConnected = depthFirstSearchCount == graph2.Vertices ? "Connected" : "NOT Connected";
var depthFirstPath = new DepthFirstPaths(graph2, 0);
var depthFirstPathTest = depthFirstPath.PathTo(4);
var breadthFirstSearch = new BreadthFirstSearch(graph2, 0);
var breadthFirstSearchCount = breadthFirstSearch.Count();
var breadthFirstSearchTest0 = breadthFirstSearch.Marked(0);
var breadthFirstSearchTest1 = breadthFirstSearch.Marked(1);
var breadthFirstSearchTest2 = breadthFirstSearch.Marked(2);
var breadthFirstSearchTest3 = breadthFirstSearch.Marked(3);
var breadthFirstSearchTest4 = breadthFirstSearch.Marked(4);
var breadthFirstSearchTest5 = breadthFirstSearch.Marked(5);
var breadthFirstSearchTestConnected = breadthFirstSearchCount == graph2.Vertices ? "Connected" : "NOT Connected";
var breadthFirstPath = new BreadthFirstPaths(graph2, 0);
var breadthFirstPathTest = breadthFirstPath.PathTo(4);
var depthFirstComponents = new DepthFirstComponents(graph);
var depthFirstComponentsTest0 = depthFirstComponents.IsConnected(0, 7);
var depthFirstComponentsTest1 = depthFirstComponents.IsConnected(0, 6);
var depthFirstComponentsTest2 = depthFirstComponents.IsConnected(7, 9);
var depthFirstComponentsTest3 = depthFirstComponents.IsConnected(7, 8);
var depthFirstComponentsTest4 = depthFirstComponents.IsConnected(9, 0);
var depthFirstComponentsTest5 = depthFirstComponents.IsConnected(9, 12);
var depthFirstCycle = new DepthFirstCycle(graph);
var depthFirstCycleTest = depthFirstCycle.HasCycle();
var depthFirstBipartite = new DepthFirstBipartite(graph);
var depthFirstBipartiteTest = depthFirstBipartite.IsBipartite();
var symbolGraph = new SymbolGraph();
symbolGraph.Insert(new [] { "JFK", "MCO" });
symbolGraph.Insert(new[] { "ORD", "DEN" });
symbolGraph.Insert(new[] { "ORD", "HOU" });
symbolGraph.Insert(new[] { "DFW", "PHX" });
symbolGraph.Insert(new[] { "JFK", "ATL" });
symbolGraph.Insert(new[] { "ORD", "DFW" });
symbolGraph.Insert(new[] { "ORD", "PHX" });
symbolGraph.Insert(new[] { "ATL", "HOU" });
symbolGraph.Insert(new[] { "DEN", "PHX" });
symbolGraph.Insert(new[] { "PHX", "LAX" });
symbolGraph.Insert(new[] { "JFK", "ORD" });
symbolGraph.Insert(new[] { "DEN", "LAS" });
symbolGraph.Insert(new[] { "DFW", "HOU" });
symbolGraph.Insert(new[] { "ORD", "ATL" });
symbolGraph.Insert(new[] { "LAS", "LAX" });
symbolGraph.Insert(new[] { "ATL", "MCO" });
symbolGraph.Insert(new[] { "HOU", "MCO" });
symbolGraph.Insert(new[] { "LAS", "PHX" });
symbolGraph.Build();
var symbolGraphTest0 = symbolGraph.Contains("LAS");
var symbolGraphTest1 = symbolGraph.Contains("MOO");
var symbolGraphTest2 = symbolGraph.Index("LAX");
var symbolGraphTest3 = symbolGraph.Name(symbolGraphTest2);
var symbolGraph2 = new SymbolGraphDegreesOfSeparation();
symbolGraph2.Insert(new[] { "JFK", "MCO" });
symbolGraph2.Insert(new[] { "ORD", "DEN" });
symbolGraph2.Insert(new[] { "ORD", "HOU" });
symbolGraph2.Insert(new[] { "DFW", "PHX" });
symbolGraph2.Insert(new[] { "JFK", "ATL" });
symbolGraph2.Insert(new[] { "ORD", "DFW" });
symbolGraph2.Insert(new[] { "ORD", "PHX" });
symbolGraph2.Insert(new[] { "ATL", "HOU" });
symbolGraph2.Insert(new[] { "DEN", "PHX" });
symbolGraph2.Insert(new[] { "PHX", "LAX" });
symbolGraph2.Insert(new[] { "JFK", "ORD" });
symbolGraph2.Insert(new[] { "DEN", "LAS" });
symbolGraph2.Insert(new[] { "DFW", "HOU" });
symbolGraph2.Insert(new[] { "ORD", "ATL" });
symbolGraph2.Insert(new[] { "LAS", "LAX" });
symbolGraph2.Insert(new[] { "ATL", "MCO" });
symbolGraph2.Insert(new[] { "HOU", "MCO" });
symbolGraph2.Insert(new[] { "LAS", "PHX" });
symbolGraph2.Insert(new[] { "ZZZ", "YYY" });
symbolGraph2.Build();
var symbolGraph2Test0 = symbolGraph2.IsConnected("JFK", "LAS");
var symbolGraph2Test1 = symbolGraph2.IsConnected("JFK", "DFW");
var symbolGraph2Test2 = symbolGraph2.IsConnected("HOU", "YYY");
}
public void Testing()
{
var graph = new DirectedGraph(13);
graph.InsertEdge(4, 2);
graph.InsertEdge(2, 3);
graph.InsertEdge(3, 2);
graph.InsertEdge(6, 0);
graph.InsertEdge(0, 1);
graph.InsertEdge(2, 0);
graph.InsertEdge(11, 12);
graph.InsertEdge(12, 9);
graph.InsertEdge(9, 10);
graph.InsertEdge(9, 11);
graph.InsertEdge(8, 9);
graph.InsertEdge(10, 12);
graph.InsertEdge(11, 4);
graph.InsertEdge(4, 3);
graph.InsertEdge(3, 5);
graph.InsertEdge(7, 8);
graph.InsertEdge(8, 7);
graph.InsertEdge(5, 4);
graph.InsertEdge(0, 5);
graph.InsertEdge(6, 4);
graph.InsertEdge(6, 9);
graph.InsertEdge(7, 6);
var vertexOutDegree = graph.VertexOutDegree(6);
var vertexInDegre = graph.VertexInDegree(6);
var graphReveresed = graph.Reverse();
var depthFirstSearch = new DepthFirstSearch(graph, 0);
var depthFirstSearchCount = depthFirstSearch.Count();
var depthFirstSearchTest0 = depthFirstSearch.Marked(0);
var depthFirstSearchTest1 = depthFirstSearch.Marked(1);
var depthFirstSearchTest2 = depthFirstSearch.Marked(2);
var depthFirstSearchTest3 = depthFirstSearch.Marked(3);
var depthFirstSearchTest4 = depthFirstSearch.Marked(4);
var depthFirstSearchTest5 = depthFirstSearch.Marked(5);
var depthFirstSearchTest6 = depthFirstSearch.Marked(6);
var depthFirstSearchTestConnected = depthFirstSearchCount == graph.Vertices ? "Connected" : "NOT Connected";
var depthFirstPath = new DepthFirstPaths(graph, 0);
var depthFirstPathTest = depthFirstPath.PathTo(2);
var breadthFirstSearch = new BreadthFirstSearch(graph, 0);
var breadthFirstSearchCount = breadthFirstSearch.Count();
var breadthFirstSearchTest0 = breadthFirstSearch.Marked(0);
var breadthFirstSearchTest1 = breadthFirstSearch.Marked(1);
var breadthFirstSearchTest2 = breadthFirstSearch.Marked(2);
var breadthFirstSearchTest3 = breadthFirstSearch.Marked(3);
var breadthFirstSearchTest4 = breadthFirstSearch.Marked(4);
var breadthFirstSearchTest5 = breadthFirstSearch.Marked(5);
var breadthFirstSearchTest6 = breadthFirstSearch.Marked(6);
var breadthFirstSearchTestConnected = breadthFirstSearchCount == graph.Vertices ? "Connected" : "NOT Connected";
var breadthFirstPath = new BreadthFirstPaths(graph, 0);
var breadthFirstPathTest = breadthFirstPath.PathTo(2);
var depthFirstCycle = new DepthFirstCycle(graph);
var depthFirstCycleTest0 = depthFirstCycle.HasCycle();
var depthFirstCycleTest1 = depthFirstCycle.Cycle();
var graph2 = new DirectedGraph(13);
graph2.InsertEdge(2, 3);
graph2.InsertEdge(0, 6);
graph2.InsertEdge(0, 1);
graph2.InsertEdge(2, 0);
graph2.InsertEdge(11, 12);
graph2.InsertEdge(9, 12);
graph2.InsertEdge(9, 10);
graph2.InsertEdge(9, 11);
graph2.InsertEdge(3, 5);
graph2.InsertEdge(8, 7);
graph2.InsertEdge(5, 4);
graph2.InsertEdge(0, 5);
graph2.InsertEdge(6, 4);
graph2.InsertEdge(6, 9);
graph2.InsertEdge(7, 6);
var depthFirstCycle2 = new DepthFirstCycle(graph2);
var depthFirstCycle2Test0 = depthFirstCycle2.HasCycle();
var depthFirstCycle2Test1 = depthFirstCycle2.Cycle();
var depthFirstOrder = new DepthFirstOrder(graph2);
var depthFirstOrderTest0 = depthFirstOrder.PreOrder();
var depthFirstOrderTest1 = depthFirstOrder.PostOrder();
var depthFirstOrderTest2 = depthFirstOrder.ReversePostOrder();
var symbolGraph = new SymbolGraph();
symbolGraph.Insert(new[] { "JFK", "MCO" });
symbolGraph.Insert(new[] { "ORD", "DEN" });
symbolGraph.Insert(new[] { "ORD", "HOU" });
symbolGraph.Insert(new[] { "DFW", "PHX" });
symbolGraph.Insert(new[] { "JFK", "ATL" });
symbolGraph.Insert(new[] { "ORD", "DFW" });
symbolGraph.Insert(new[] { "ORD", "PHX" });
symbolGraph.Insert(new[] { "ATL", "HOU" });
symbolGraph.Insert(new[] { "DEN", "PHX" });
symbolGraph.Insert(new[] { "PHX", "LAX" });
symbolGraph.Insert(new[] { "JFK", "ORD" });
symbolGraph.Insert(new[] { "DEN", "LAS" });
symbolGraph.Insert(new[] { "DFW", "HOU" });
symbolGraph.Insert(new[] { "ORD", "ATL" });
symbolGraph.Insert(new[] { "LAS", "LAX" });
symbolGraph.Insert(new[] { "ATL", "MCO" });
symbolGraph.Insert(new[] { "HOU", "MCO" });
symbolGraph.Insert(new[] { "LAS", "PHX" });
symbolGraph.Build();
var symbolGraphTest0 = symbolGraph.Contains("LAS");
var symbolGraphTest1 = symbolGraph.Contains("MOO");
var symbolGraphTest2 = symbolGraph.Index("LAX");
var symbolGraphTest3 = symbolGraph.Name(symbolGraphTest2);
var symbolGraph2 = new SymbolGraph();
symbolGraph2.Insert(new[] { "Algorithms", "Theoretical CS", "Databases", "Scientific Computing" });
symbolGraph2.Insert(new[] { "Introduction to CS", "Advanced Programming", "Algorithms" });
symbolGraph2.Insert(new[] { "Advanced Programming", "Scientific Computing" });
symbolGraph2.Insert(new[] { "Scientific Computing", "Computational Biology" });
symbolGraph2.Insert(new[] { "Theoretical CS", "Computational Biology", "Artificial Intelligence" });
symbolGraph2.Insert(new[] { "Linear Algebra", "Theoretical CS" });
symbolGraph2.Insert(new[] { "Calculus", "Linear Algebra" });
symbolGraph2.Insert(new[] { "Artificial Intelligence", "Neural Networks", "Robotics", "Machine Learning" });
symbolGraph2.Insert(new[] { "Machine Learning", "Neural Networks" });
symbolGraph2.Build();
var topologicalSort = new TopologicalSort(symbolGraph2.Graph());
var topologicalSorted = new List <string>();
foreach (var item in topologicalSort.Order)
{
topologicalSorted.Add(symbolGraph2.Name(item));
}
var depthFirstComponents = new DepthFirstComponents(graph);
var depthFirstComponentsTest0 = depthFirstComponents.IsStronglyConnected(1, 7);
var depthFirstComponentsTest1 = depthFirstComponents.IsStronglyConnected(0, 2);
var depthFirstComponentsTest2 = depthFirstComponents.IsStronglyConnected(2, 7);
var depthFirstComponentsTest3 = depthFirstComponents.IsStronglyConnected(9, 12);
var depthFirstComponentsTest4 = depthFirstComponents.IsStronglyConnected(6, 8);
var depthFirstComponentsTest5 = depthFirstComponents.IsStronglyConnected(7, 8);
}