ArraySequence Funzionante

com/xgiovio/ArraySequenceTest.java

@@ -17,9 +17,12 @@ public class ArraySequenceTest {
         ArraySequence<test_object> a = new ArraySequence<test_object>(10);
 
         a.addFirst(new test_object(3));
+
         Position<test_object> p = a.addAfter(a.first(), new test_object(6));
         System.out.print(a);
 
+        System.out.print (a.indexOf( a.next( a.first())));
+
 
     }
 

position/PositionList.java

@@ -8,7 +8,8 @@ import  exceptions.*;
  */
 //Copyright (c) 2003 Brown University, Providence, RI
 //Additional modifications and methods by xgiovio
-public interface PositionList<E>  {
+
+public interface PositionList<E> {
 
 
   public int size();

sequence/ArraySequence.java

@@ -20,11 +20,11 @@ public class ArraySequence<E> implements Sequence<E> {
     private int size = 0;
 
     public ArraySequence() {
-        array = (Position<E>[]) new Object[capacity];
+        array = new Position[capacity];
     }
 
     public ArraySequence(int in_size) {
-        array = (Position<E>[]) new Object[in_size];
+        array = new Position[in_size];
         capacity = in_size;
     }
 
@@ -55,14 +55,14 @@ public class ArraySequence<E> implements Sequence<E> {
         checkIndex(r, size() + 1);
         if (size == capacity) {
             capacity *= 2;
-            Position<E>[] B =(Position<E>[]) new Object[capacity];
+            Position<E>[] B = new Position[capacity];
             for (int i=0; i<size; i++)
                 B[i] = array[i];
             array = B;
         }
         for (int i=size-1; i>=r; i--)
             array[i+1] = array[i];
-        ((ArrayPosition<E>)array[r]).setElement(e);
+        array[r] = new ArrayPosition<E>(e,r);
         size++;
     }