add simplelist

src/StruttureDati/SimpleList/SimpleList.java

@@ -0,0 +1,45 @@
+public class SimpleList{
+
+    private class Node{
+        public Object elem;
+        public Node next;
+    }
+
+    public SimpleList(){
+        node=null;
+        len=0;
+    }
+
+    public boolean isEmpty(){
+        return node==null;
+    }
+
+    public int size(){
+        return len;
+    }
+
+    public Object head(){
+        if(node==null)
+            return null;
+        else
+            return node.elem;
+    }
+
+    public void addHead(Object nuovo){
+        Node tmp=new Node();
+        tmp.elem=nuovo;
+        tmp.next=node;
+        node=tmp;
+        len++;
+    }
+
+    public void remHead();{
+        if(node!=null){
+            node=node.next;
+            len--;
+        }
+    }
+
+    private Node node;
+    private int len; 
+}