added all past projects

Java/JosefProlemObjektorientiert/src/josefprolemobjektorientiert/JosefProlemObjektorientiert.java

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+package josefprolemobjektorientiert;
+
+public class JosefProlemObjektorientiert {
+
+    public static void main(String[] args) {
+        Person erster = new Person(1);
+        int personenCount = 41;
+        for (int i = personenCount; i > 1; i--) {
+            erster.addNext(new Person(i));
+        }
+        Person current = erster;
+        int counter = 0;
+        Ausgabe(current);
+        counter = 0;
+        do {
+            counter ++;
+            if (counter % 3 == 0) {
+                current = current.remove();
+                Ausgabe(current);
+            } else {
+                current = current.next;
+            }
+        } while (current != current.next);
+
+
+    }
+
+    public static void Ausgabe(Person current) {
+        Person erster = current;
+        do {
+            System.out.print(current + " ");
+            current = current.next;
+
+        } while (current != erster);
+
+        System.out.println();
+    }
+}
+
+class Person {
+
+    private int id = 0;
+    public Person next, previous;
+
+    public Person(int nr) {
+        this.id = nr;
+        next = this;
+        previous = this;
+    }
+
+    public void addNext(Person p) {
+        p.next = this.next;
+        p.previous = this;
+
+        this.next.previous = p;
+        this.next = p;
+    }
+
+    @Override
+    public String toString() {
+        return Integer.toString(id);
+    }
+
+    public Person remove() {
+        this.next.previous = this.previous;
+        this.previous.next = this.next;
+        return this.next;
+    }
+}