add UE10_Rekursion3

src/UE10_070125_Rekursion3/UE10_Rekursion3_Aufgabe1.java

@@ -0,0 +1,50 @@
+package UE10_070125_Rekursion3;
+
+
+import javafx.application.Application;
+import javafx.scene.Scene;
+import javafx.scene.canvas.Canvas;
+import javafx.scene.canvas.GraphicsContext;
+import javafx.scene.layout.BorderPane;
+import javafx.scene.paint.Color;
+import javafx.stage.Stage;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class UE10_Rekursion3_Aufgabe1 extends Application {
+
+    static final int canvasWidth = 1000;
+    static final int canvasHeight = 500;
+
+    Canvas canvas = new Canvas(canvasWidth, canvasHeight);
+    GraphicsContext gc = canvas.getGraphicsContext2D();
+
+    public static void main(String[] args) {
+        //Aufgabe 1
+        Application.launch(args);
+    }
+
+    @Override
+    public void start(Stage primaryStage) {
+        primaryStage.setResizable(false);
+        primaryStage.setScene(new Scene(new BorderPane(canvas)));
+        primaryStage.show();
+        gc.setFill(Color.LIGHTGRAY);
+        gc.fillRect(0, 0, canvas.getWidth(), canvas.getHeight());
+        int side = 100;
+        drawRec((canvasWidth - side) / 2, canvasHeight - side - 10, side);
+    }
+
+    private void drawRec(int xCord, int yCord, int side) {
+        if (side < 2) return;
+        gc.setFill(Color.WHITE);
+        gc.fillRect(xCord, yCord, side, side);
+        gc.setStroke(Color.BLACK);
+        gc.setLineWidth(1);
+        gc.strokeRect(xCord, yCord, side, side);
+        int newSide = side * 3 / 4;
+        drawRec(xCord - newSide, yCord - newSide, side / 2);
+        drawRec(xCord + side * 5 / 4, yCord - newSide, side / 2);
+    }
+}

src/UE10_070125_Rekursion3/UE10_Rekursion3_Aufgabe2.java

@@ -0,0 +1,33 @@
+package UE10_070125_Rekursion3;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class UE10_Rekursion3_Aufgabe2 {
+    public static void main(String[] args) {
+        //Aufgabe 2
+        System.out.println("\n(9,3)");
+        summingUp(9, 3, new ArrayList<>());
+        System.out.println("\n(9,2)");
+        summingUp(9, 2, new ArrayList<>());
+        System.out.println("\n(45,9)");
+        summingUp(45, 9, new ArrayList<>());
+        System.out.println("\n(28,4)");
+        summingUp(28, 4, new ArrayList<>());
+    }
+
+    public static void summingUp(int number, int count, List<Integer> list) {
+        if (number == 0 && count == 0) {
+            System.out.println(list.toString().replaceAll("\\D", ""));
+            return;
+        }
+        if (number <= 0 || count <= 0) return;
+        int start = 9;
+        if (!list.isEmpty()) start = list.getLast() - 1;
+        for (int i = start; i >= 1; i--) {
+            list.add(i);
+            summingUp(number - i, count - 1, list);
+            list.removeLast();
+        }
+    }
+}