added demo classes

uebung03/src/graph/GraphDemo.java

@@ -0,0 +1,47 @@
+package graph;
+
+import java.util.ArrayList;
+
+public class GraphDemo {
+
+    public static void main(String[] args) {
+        final Graph graph = makeGraph();
+        System.out.println(graph);
+        System.out.println();
+        final Node nodeA = graph.getNodes().get(0);
+        System.out.println("breadth first: " + nodeList(graph.breadthFirst(nodeA)));
+        System.out.println("depth first: " + nodeList(graph.depthFirst(nodeA)));
+    }
+
+    private static Graph makeGraph() {
+        final Node nodeA = new Node("A");
+        final Node nodeB = new Node("B");
+        final Node nodeC = new Node("C");
+        final Node nodeD = new Node("D");
+        final Node nodeE = new Node("E");
+        final Graph graph = new Graph();
+        graph.addNode(nodeA);
+        graph.addNode(nodeB);
+        graph.addNode(nodeC);
+        graph.addNode(nodeD);
+        graph.addNode(nodeE);
+        nodeA.addEdge(new Edge(2, nodeB));
+        nodeA.addEdge(new Edge(4, nodeD));
+        nodeB.addEdge(new Edge(2, nodeA));
+        nodeB.addEdge(new Edge(2, nodeC));
+        nodeB.addEdge(new Edge(4, nodeE));
+        nodeC.addEdge(new Edge(2, nodeB));
+        nodeD.addEdge(new Edge(4, nodeA));
+        nodeD.addEdge(new Edge(2, nodeE));
+        nodeE.addEdge(new Edge(4, nodeB));
+        nodeE.addEdge(new Edge(2, nodeD));
+        return graph;
+    }
+
+    private static String nodeList(ArrayList<Node> nodes) {
+        final ArrayList<String> names = new ArrayList<>();
+        for (Node n : nodes)
+            names.add(n.getName());
+        return names.toString();
+    }
+}

uebung03/src/polynomial/PolynomialDemo.java

@@ -1,5 +1,76 @@
 package polynomial;
 
 public class PolynomialDemo {
-    private Polynomial p1 = new Polynomial(new int[]{1,4});
+
+    public static void main(String[] args) {
+        //b
+        Polynomial p1 = new Polynomial(new int[]{1, 2, 3, 4});
+        Polynomial p2 = new Polynomial(new int[]{0, 0, 0});
+        Polynomial p3 = new Polynomial(new int[]{3});
+        //Polynomial p99 = new Polynomial(new int[]{});
+
+        //c
+        System.out.println();
+        System.out.println(p1.getDegree());
+        System.out.println(p2.getDegree());
+        System.out.println(p3.getDegree());
+
+        //f
+        System.out.println();
+        Polynomial p4 = new Polynomial();
+        System.out.println(p4.getDegree());
+
+        //g
+        System.out.println();
+        Polynomial p5 = Polynomial.constant(5);
+        System.out.println(p5.getDegree());
+
+        //h
+        System.out.println();
+        Polynomial p6 = new Polynomial(new int[]{0, -1, 2, +3, -2, 0, 1});
+        System.out.println(p1);
+        System.out.println(p2);
+        System.out.println(p3);
+        System.out.println(p4);
+        System.out.println(p5);
+        System.out.println(p6);
+
+        //i
+        System.out.println();
+        Polynomial p7 = p1.add(p6);
+        System.out.println(p7);
+
+        //j
+        System.out.println();
+        Polynomial p8 = p1.sub(p6);
+        Polynomial p9 = p6.sub(p6);
+        Polynomial p10 = p1.mult(p1);
+        Polynomial p11 = p1.mult(p6);
+        System.out.println(p8);
+        System.out.println(p9);
+        System.out.println(p10);
+        System.out.println(p11);
+
+        //k
+        System.out.println();
+        Polynomial p12 = p1.add(5);
+        Polynomial p13 = p6.sub(5);
+        Polynomial p14 = p1.mult(5);
+        System.out.println(p12);
+        System.out.println(p13);
+        System.out.println(p14);
+
+        //l
+        System.out.println();
+        Polynomial p15 = p1.exp(5);
+        System.out.println(p15);
+        System.out.println(p1.mult(p1).mult(p1).mult(p1).mult(p1));
+
+        //m
+        System.out.println();
+        System.out.println(p1.apply(0));
+        System.out.println(p1.apply(1));
+        System.out.println(p1.apply(2));
+        System.out.println(p6.apply(4));
+    }
 }