Add Task 6 sorter, fix method signatures, generate solution PDF

aufgabenblatt1/src/task3/NumberGuesser.java

@@ -30,8 +30,8 @@ public class NumberGuesser {
         while (low <= high) {
             int mid = low + (high - low) / 2;
 
+            System.out.println("Guess: " + mid);
             if (mid == number) {
-                System.out.println("Found the number: " + mid);
                 return;
             } else if (isBigger(mid)) {
                 low = mid + 1;