public boolean hasNext() {
if (current.getNext() == null) {
return false;
} else {
return true;
}
}
public T next() {
if (hasNext()) {
current = current.getNext();
return current.getData();
} else {
throw new NoSuchElementException();
}
}
private static void serverCall() throws Exception {
String sentence = "move";
String line;
while (!gameStopped) {
System.out.print("");
}
playing = false;
try {
setDiscussion();
} catch (Exception ex) {
System.out.println("Failed to discuss with clients");
}
BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));
try {
InetAddress inetAddress = InetAddress.getByName(serverInfo.getNext().getIpAddr());
Socket clientSocket = new Socket(inetAddress, serverInfo.getNext().getPort());
DataOutputStream out = new DataOutputStream(clientSocket.getOutputStream());
BufferedReader in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
sendInfo(out);
line = in.readLine();
while (!game.getUnbinding()) ;
Naming.unbind("rmi://" + serverInfo.getIpAddr() + ":1099/I_InfoGame");
out.writeBytes("Unbinding finished\n");
line = in.readLine();
clientSocket.close();
} catch (RemoteException e) {
System.out.println("Failed get info from game");
System.exit(1);
} catch (Exception ex) {
System.out.println("Failed to socket with waiting server");
}
discussion.shutDown();
discussion = null;
game = null;
System.gc();
serverWaiting();
}
public static void serverInit() {
String serverAddress = "rmi://" + serverInfo.getIpAddr() + ":1099/I_InfoGame";
try {
game = new InfoGame();
server = new Server();
game.setServer(server);
game.setServerAddress(serverInfo.getIpAddr());
game.setNextAddress(serverInfo.getNext().getIpAddr());
game.setNbPlayerExpected(numPlayer);
Naming.rebind(serverAddress, game);
socketPortClient = serverInfo.getPortClient();
// System.out.println("End initialisation");
} catch (RemoteException e) {
System.out.println("Hubo una excepcion creando la instancia del objeto distribuido");
} catch (MalformedURLException e) {
System.out.println("URL mal formada al tratar de publicar el objeto");
}
}
public static void main(String[] args) {
Node n1;
n1 = new Node("Tommy");
System.out.println(n1);
Node n2 = new Node("Sammy");
System.out.println(n2);
n1.setNext(n2);
System.out.println(n1.getNext());
n2.setNext(new Node("Clyde"));
System.out.println(n1.getNext().getNext());
System.out.println(n2.getNext());
/* example of removing a node
n1.setNext(n2.getNext());
// or n1.setNext(n1.getNext().getNext());
System.out.println("After removing second node");
System.out.println(n1);
System.out.println(n1.getNext());
System.out.println(n1.getNext().getNext());
*/
Node last = n1.getNext().getNext();
last.setNext(n1); // creates a loop by connecting last to first
System.out.println("Looping through the list");
System.out.println(n1.getNext());
System.out.println(n1.getNext().getNext());
System.out.println(n1.getNext().getNext().getNext());
System.out.println(n1.getNext().getNext().getNext().getNext());
System.out.println("Testing toString method");
MyLinkedList m1 = new MyLinkedList();
m1.add("A");
m1.add("B");
m1.add("C");
System.out.println(m1);
System.out.println("Testing add(int i, String s)");
m1.add(1, "D");
System.out.println(m1);
}
public static void main(String[] args) throws IOException {
// list of possible colors
String[] colorNames = {" ", "Red", "Yellow", "Blue", "Green"};
// colors represented as integers
int[] colorList = {0, 1, 2, 3, 4};
// read in file
if (args.length == 0) System.out.println("No file specified.");
else {
FileReader theFile;
BufferedReader inFile;
String oneLine;
try {
theFile = new FileReader(args[0]);
inFile = new BufferedReader(theFile);
// while not end of input
while ((oneLine = inFile.readLine()) != null) {
// build a linked list
String numNodes[] = oneLine.split(" ");
System.out.println("Number of nodes: " + numNodes[0]);
int numOfNodes = Integer.parseInt(numNodes[0]);
LinkedList v = new LinkedList();
// add the number of vertex nodes indicated in the input file, all to one linked list
for (int i = 0; i < numOfNodes; i++) {
Node y = new Node();
v.append(y);
}
// create adjacency table
int[][] a = new int[numOfNodes][numOfNodes];
// Read in the adjacency table
for (int r = 0; r < numOfNodes; r++) {
// read in each line of the input table
oneLine = inFile.readLine();
String[] line = oneLine.split(" ");
for (int c = 0; c < numOfNodes; c++) {
a[r][c] = Integer.parseInt(line[c]);
}
}
// print adjacency table
printArray(a, numOfNodes);
// now try to assign colors and check adjacency table as you move along,
// backtracking when necessary
boolean valid;
int colorCount = 0;
int x;
int n = 0; // n represents which node I am currently in
Node p = v.first.getNext();
while (p.getNext() != null) {
colorCount++;
x = colorList[colorCount];
p.setColor(x);
// check if current selected color would be valid for this node
valid = v.checkAdjacency(x, n, a, numOfNodes);
if (valid == false) {
if (colorCount < 4 && colorCount > 0) {
continue; // will try next color when re-enter while loop
} else { // backtrack to previous node
if (n > 0) {
v.printProgressThusFar(n);
p.setColor(0);
p = p.getPrevious();
n--;
int z = p.getColor();
while (z
== 4) { // if previous node is at last color, then go to previous one, etc.
p.setColor(0);
if (n > 0) {
p = p.getPrevious();
n--;
} else break;
z = p.getColor();
} // when you reach a previous node whose color you can increment, go back through
// the while loop again
colorCount = z;
}
}
} else { // if(good==true) then just keep going with filling in colors
p = p.getNext();
n++;
colorCount = 0; // reset color back to red for next node
}
} // while (p.getNext()!=null)
// print the solution that has been found
v.printList();
} // end while loop
} // end try loop
catch (Exception e) {
e.printStackTrace();
System.out.println("An error has occurred!");
}
} // end else
} // end main
