add plusOperator, kleeneStar

src/main/java/ab1/impl/GRUPPE/NFAImpl.java

@@ -32,7 +32,6 @@ public class NFAImpl implements NFA {
         return this.transitions;
     }
 
-
     @Override
     public Set<String> getAcceptingStates() {
 
@@ -62,6 +61,26 @@ public class NFAImpl implements NFA {
         }
     }
 
+    // warum gabs die methode nicht schon vorher? weil i a idiot bin und man die direct adden kann.
+    /*
+    public void addAllStates(Set<String> states) throws FinalizedStateException {
+        if (this.isFinalized) {
+            throw new FinalizedStateException();
+        } else {
+            this.states.addAll(states);
+        }
+    }
+
+    public void addAllTransitions(Set<Transition> transitions) throws FinalizedStateException {
+        if (this.isFinalized) {
+            throw new FinalizedStateException();
+        } else {
+            this.transitions.addAll(transitions);
+        }
+    }
+     */
+
+
     // #TODO
     @Override
     public NFA union(NFA other) throws FinalizedStateException {
@@ -83,13 +102,54 @@ public class NFAImpl implements NFA {
     // #TODO
     @Override
     public NFA kleeneStar() throws FinalizedStateException {
-        return null;
+        if (this.isFinalized) {
+            throw new FinalizedStateException();
+        }
+
+        NFAImpl nfa = new NFAImpl(this.initialState);
+
+        // deep copy but without accepting states
+        nfa.states.addAll(this.states);
+        nfa.transitions.addAll(this.transitions);
+
+        for (String acceptingState : this.acceptingStates) {
+            Transition loopBackTransition =
+                    // creating an epsilon transition (null) for each accepting state
+                    new Transition(acceptingState, null, this.initialState);
+            nfa.transitions.add(loopBackTransition);
+        }
+
+        // adding the initial state as accepting state
+        nfa.acceptingStates.add(this.initialState);
+
+        nfa.finalizeAutomaton();
+
+        return nfa;
     }
 
     // #TODO
     @Override
     public NFA plusOperator() throws FinalizedStateException {
-        return null;
+        if (this.isFinalized) {
+            throw new FinalizedStateException();
+        }
+
+        NFAImpl nfa = new NFAImpl(this.initialState);
+
+        // simple deep copy
+        nfa.states.addAll(this.states);
+        nfa.transitions.addAll(this.transitions);
+        nfa.acceptingStates.addAll(this.acceptingStates);
+
+        // for each accepting state
+        for (String acceptingState : this.acceptingStates) {
+            Transition loopBackTransition =
+                    // creating an epsilon transition (null) for each accepting state
+                    new Transition(acceptingState, null, this.initialState);
+            nfa.transitions.add(loopBackTransition);
+        }
+
+        return nfa;
     }
 
     // #TODO