//BFS
public static Boolean searchBFS(Graph g, Node start, Node end)
{
foreach(Node node in g.getNodes()){
node.state = State.Unvisited;
}
Queue<Node> queue = new Queue<Node>();
start.state = State.Visiting;
queue.Enqueue(start);
Node u;
while(queue.Count != 0){
u = queue.Dequeue();
if( u != null){
foreach(Node n in u.getAdjacent()){
if(n.state == State.Unvisited){
if( n == end)
return true;
else{
n.state = State.Visiting;
queue.Enqueue(n);
}
}
}
u.state = State.Visited;
}
}
return false;
}
//DFS
public static Boolean searchDFS(Graph g, Node start, Node end)
{
foreach (Node node in g.getNodes())
{
node.state = State.Unvisited;
}
return searchDFS(start, false, end);
}
public void addNode(Node x)
{
if (count < vertices.Length)
{
vertices[count] = x;
count++;
}
else {
Console.WriteLine("Graph full");
}
}
public void addAdjacent(Node x)
{
if (this.adjacentCount < this.adjacent.Length)
{
this.adjacent[adjacentCount] = x;
adjacentCount++;
}
else
{
Console.WriteLine("No more adjacent can be added");
}
}
public static Graph createNewGraph()
{
Graph g = new Graph();
Node[] temp = new Node[6];
temp[0] = new Node("a", 3);
temp[1] = new Node("b", 0);
temp[2] = new Node("c", 0);
temp[3] = new Node("d", 1);
temp[4] = new Node("e", 1);
temp[5] = new Node("f", 0);
temp[0].addAdjacent(temp[1]);
temp[0].addAdjacent(temp[2]);
temp[0].addAdjacent(temp[3]);
temp[3].addAdjacent(temp[4]);
temp[4].addAdjacent(temp[5]);
for(int i = 0; i < 6; i++){
g.addNode(temp[i]);
}
return g;
}
public static Boolean searchDFS(Node root, Boolean flag, Node end)
{
if (!flag) {
root.state = State.Visited;
if (root.getAdjacent() != null && root.getAdjacent().Length != 0) {
foreach(Node n in root.getAdjacent()){
if (n.state == State.Unvisited) {
if (n == end)
{
flag = true;
}
else {
flag = searchDFS(n, flag, end);
}
}
}
}
}
return flag;
}
