Migliroato positions e agiunto come metodo alla interfaccia position. Fixato alcuni bug. Aggiunto test della prova intercorso del 10/4/14. Bisogna implementare tree

iterator/IterablePositionIndexList.java

@@ -0,0 +1,73 @@
+package iterator;
+
+import arraylist.ArrayIndexList;
+import position.Position;
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+/**
+ * Created with MONSTER.
+ * User: xgiovio
+ * Date: 06/04/2014
+ * Time: 21:13
+ */
+
+// generic iterable list creation using an arraylist. the class calling this metod should pass an array of Position<E>
+
+public class IterablePositionIndexList<E> implements Iterable<Position<E>> {
+
+    Position<E>[]  new_structure = null;
+
+    public IterablePositionIndexList (Position<E>[] in){
+        new_structure = in;
+    }
+
+    @Override
+    public Iterator<Position<E>> iterator() {
+        return new getpositionsiterator(new_structure);
+    }
+
+
+    class getpositionsiterator implements Iterator<Position<E>>{
+
+        public getpositionsiterator(Position<E>[] in_elements){
+            for (int i = 0;i< in_elements.length;i++){
+                data.add(i,in_elements[i]);
+            }
+        }
+
+        @Override
+        public boolean hasNext() {
+
+            if (pos <= data.size() -2){
+                return true;
+            }else {
+                return false;
+            }
+
+        }
+
+        @Override
+        public Position<E> next() throws NoSuchElementException {
+            if (hasNext()){
+                pos++;
+                return data.get(pos);
+            }else {
+                throw new NoSuchElementException();
+            }
+        }
+
+        @Override
+        public void remove() {
+            throw new UnsupportedOperationException ();
+        }
+
+        private ArrayIndexList<Position<E>> data = new ArrayIndexList<Position<E>>();
+        private int pos = -1;
+
+
+    }
+
+
+}