ArrayIndexList completed

arraylist/ArrayIndexList.java

@@ -6,59 +6,89 @@ package arraylist;
  * Date: 24/03/14
  * Time: 14:31
  */
-public class ArrayIndexList<E> implements IndexList<E> {
 
+    public class ArrayIndexList<E> implements IndexList<E> {
+        private E[] array;
+        private int capacity = 100;
+        private int size = 0;
 
-    public ArrayIndexList(){
-        indexlist = (E[])new Object [def_capacity];
+        public ArrayIndexList() {
+            array = (E[]) new Object[capacity];
         }
 
-    public ArrayIndexList( int  in_n){
-        indexlist = (E[])new Object [in_n];
+        public ArrayIndexList(int in_size) {
+        array = (E[]) new Object[in_size];
+        capacity = in_size;
     }
 
-
-    @Override
-    public E remove(int i) throws IndexOutOfBoundsException {
-        return null;
-    }
-
-    @Override
-    public void add(int i, E e) throws IndexOutOfBoundsException {
-
-    }
-
-    @Override
-    public E set(int i, E e) throws IndexOutOfBoundsException {
-        return null;
-    }
-
-    @Override
-    public E get(int i) throws IndexOutOfBoundsException {
-        return null;
-    }
-
-    @Override
-    public boolean isEmpty() {
-        if (size() == 0){
-            return true;
-        }else{
-            return false;
-        }
-    }
-
-    @Override
         public int size() {
-        return nelements;
+            return size;
         }
 
+        public boolean isEmpty() {
+            return size() == 0;
+        }
+
+        public E get(int r) throws IndexOutOfBoundsException {
+            checkIndex(r, size());
+            return array[r];
+        }
+
+        public E set(int r, E e) throws IndexOutOfBoundsException {
+            checkIndex(r, size());
+            E temp = array[r];
+            array[r] = e;
+            return temp;
+        }
+
+        public void add(int r, E e) throws IndexOutOfBoundsException {
+            checkIndex(r, size() + 1);
+            if (size == capacity) {
+                capacity *= 2;
+                E[] B =(E[]) new Object[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];
+            array[r] = e;
+            size++;
+        }
+
+        public E remove(int r) throws IndexOutOfBoundsException {
+            checkIndex(r, size());
+            E temp = array[r];
+            for (int i=r; i<size-1; i++)
+                array[i] = array[i+1];
+            size--;
+            return temp;
+        }
+
+
+        protected void checkIndex(int r, int n) //
+                throws IndexOutOfBoundsException {	//
+            if (r < 0 || r >= n)
+                throw new IndexOutOfBoundsException("Illegal index: " + r);
+        }
+
+
     @Override
     public String toString() {
-        return super.toString();
+
+        String to_return = "";
+        to_return = to_return + "[";
+
+        for (  int i = 0; i< size() ; i++){
+
+            if ( i== size() -1){
+                to_return+=(get(i).toString());
+            }else{
+                to_return+=(get(i).toString() + ",");
             }
+        }
+        to_return = to_return + "]";
 
-    private E[] indexlist;
-    private int def_capacity = 100;
-    private int nelements = 0;
-
+        return to_return;
+    }
 }

com/xgiovio/ArrayIndexListTest.java

@@ -0,0 +1,34 @@
+package com.xgiovio;
+
+import arraylist.ArrayIndexList;
+import general_utility.test_object;
+import stack.NodeStack;
+
+/**
+ * Created with xgiovio.macbookair.
+ * User: xgiovio
+ * Date: 23/03/14
+ * Time: 20:37
+ */
+public class ArrayIndexListTest {
+
+    public static void main(String[] args) {
+        ArrayIndexList<test_object> a = new ArrayIndexList<test_object>(2);
+
+        a.add(0,new test_object(1));
+        a.add(1,new test_object(2));
+        a.add(2,new test_object(3));
+        a.add(3,new test_object(4));
+
+        System.out.print(a);
+        a.remove(2);
+        System.out.print(a);
+
+
+
+
+
+
+    }
+
+}