Problem mit den zu langen Routen gefixt.

Wir müssen die Straßen als genutzt markieren, nicht die Städte.

Routenplaner/src/de/th_mannheim/informatik/routenplaner/NaviApp.java

@@ -7,7 +7,9 @@ public class NaviApp {
 	public static void main(String[] args) {
 		Routeplaner map = new Routeplaner();
 		
+		System.out.println();
 		System.out.println(map.getNumberOfCities());
+		System.out.println();
 		
 		for (String waypoint : map.initializePlanning("Mannheim", "Wilhelmshaven"))
 			System.out.println(waypoint);

Routenplaner/src/de/th_mannheim/informatik/routenplaner/domain/City.java

@@ -6,7 +6,6 @@ public class City {
 	private String name;
 	private int distance;
 	private String predecessor;
-	private boolean visited;
 
 	private TreeSet<Street> neighbors = new TreeSet<>();
 
@@ -31,6 +30,7 @@ public class City {
 		if (distance < this.distance) {
 			this.distance = distance;
 			this.predecessor = predecessor;
+			System.out.println(name + " " + distance + " <- " + predecessor);
 		}
 	}
 	
@@ -42,14 +42,6 @@ public class City {
 		this.distance = distance;
 	}
 	
-	public boolean isVisited() {
-		return visited;
-	}
-	
-	public void setVisited() {
-		visited = true;
-	}
-	
 	public String getPredecessor() {
 		return predecessor;
 	}
@@ -57,7 +49,6 @@ public class City {
 	private void reset() {
 		distance = Integer.MAX_VALUE;
 		predecessor = null;
-		visited = false;
 	}
 	
 }

Routenplaner/src/de/th_mannheim/informatik/routenplaner/domain/Routeplaner.java

@@ -20,9 +20,9 @@ public class Routeplaner {
 
 	public Deque<String> initializePlanning(String start, String destination) {
 		cities.get(start).setDistance(0);
-		
+
 		planRoute(start, destination);
-		
+
 		System.out.println();
 		System.out.println();
 		System.out.println("Route:");
@@ -30,49 +30,50 @@ public class Routeplaner {
 
 		Deque<String> hops = new ArrayDeque<>();
 		City dc = cities.get(destination);
-		
+
 		while (true) {
 			hops.push(dc.getName() + " " + dc.getDistance() + " km");
-			
+
 			if (dc.getName().equals(start))
 				break;
-			
+
 			dc = cities.get(dc.getPredecessor());
 		}
-		
+
 		return hops; 
 	}
-	
+
 	private void planRoute(String start, String destination) {
 		System.out.println("Prüfe " + start);
 		City sc = cities.get(start);
-		sc.setVisited();
-		
+
 		if (sc == null || cities.get(destination) == null)
 			throw new RuntimeException("Stadt nicht gefunden.");
-		
+
 		for (Street s : sc.getNeighbors()) {
+			if (s.isUsed())
+				continue;
+			
+			s.setUsed();
+			
 			System.out.println(s.toString());
 			
 			City nc = s.getDestination();
-			
-			if (nc.isVisited()) {
-				System.out.println("schon besucht");
-				continue;
-			}
-		
+
 			nc.checkAndChangeDistance(sc.getDistance() + s.getDistance(), sc.getName());
-			
+
 			if (nc.getName().equals(destination)) {
 				System.out.println("Route nach " + destination + " gefunden mit Entfernung: " + nc.getDistance());
 			} else {
+				System.out.println();
 				planRoute(nc.getName(), destination);
+				System.out.println();
 			}
-				
+
 		}
-	
+
 	}
-	
+
 	public int getNumberOfCities() {
 		return cities.size();
 	}
@@ -124,7 +125,7 @@ public class Routeplaner {
 		}
 
 	}
-	
+
 	private void loadConnections(int[][] matrix, HashMap<String, Integer> cityLookup) throws IOException {
 		final Scanner sc = new Scanner(new File("Routenplaner/resources/verb.txt"));
 
@@ -142,10 +143,11 @@ public class Routeplaner {
 				continue;
 			}
 
+			System.out.println(start + " " + line + " " + matrix[cityLookup.get(start)][cityLookup.get(line)]);
 			this.addStreet(start, line, matrix[cityLookup.get(start)][cityLookup.get(line)]);
 
 		} // while
-		
+
 		sc.close();
 	}
 
@@ -159,7 +161,7 @@ public class Routeplaner {
 		}
 		return cityNames;
 	}
-	
+
 	private void addCity(String name) {
 		cities.put(name, new City(name));
 	}
@@ -171,5 +173,5 @@ public class Routeplaner {
 		s1.addConnection(s2, distance);
 		s2.addConnection(s1, distance);
 	}
-	
+
 }

Routenplaner/src/de/th_mannheim/informatik/routenplaner/domain/Street.java

@@ -5,6 +5,8 @@ public class Street implements Comparable<Street> {
 	private final City destination;
 
 	private final int distance;
+	private boolean used;
+
 
 	public Street(City start, City destination, int distance) {
 		super();
@@ -39,6 +41,13 @@ public class Street implements Comparable<Street> {
 		return distance;
 	}
 	
+	public boolean isUsed() {
+		return used;
+	}
+	
+	public void setUsed() {
+		used = true;
+	}
 	public String toString() {
 		return start.getName() + " -> " + destination.getName() + ": " + distance + " km";
 	}