Stack e Queue completati, compreso il toString. Versione sia array che lista.

stack/ArrayStack.java

@@ -64,11 +64,6 @@ public class ArrayStack<E> implements Stack<E> {
             return false;
     }
 
-    @Override
-    // not used
-    public boolean isFull() {
-            return false;
-    }
 
     @Override
     public int size() {

stack/NodeStack.java

@@ -48,11 +48,7 @@ public class NodeStack<E> implements Stack<E> {
             return false;
     }
 
-    @Override
-    // not used
-    public boolean isFull() {
-            return false;
-    }
+
 
     @Override
     public int size() {

stack/Stack.java

@@ -15,7 +15,6 @@ public interface Stack<E> {
     public  E top () throws EmptyStackException;
     public  E pop () throws EmptyStackException;
     public  boolean isEmpty();
-    public  boolean isFull();
     public  int size();
 
 }