module4/src/main/java/com/hithomelabs/princeton1/module4/ArrayQueue.java

@@ -6,7 +6,7 @@ import javax.annotation.Nonnull;
 
 public class ArrayQueue<E> extends Queue<E>{
 
-    private E[] queueArray = (E[]) new Object[1];
+    private E[] queueArray = (E[]) new Object[5];
     private int startPtr;
     private int endPtr;
     private int size;
@@ -50,8 +50,9 @@ public class ArrayQueue<E> extends Queue<E>{
         int oldArraySize = tempArray.length;
         queueArray = (E[]) new Object[targetSize];
         int j = 0;
-        for(int i=startPtr; i<endPtr; i++)
-            queueArray[j++]=tempArray[i];
+
+        for(int i=0; i<size; i++)
+            queueArray[j++]=tempArray[(startPtr+i)%oldArraySize];
         endPtr = size();
         startPtr = 0;
         queueArrayLength = queueArray.length;
@@ -69,12 +70,12 @@ public class ArrayQueue<E> extends Queue<E>{
 
         @Override
         public boolean hasNext() {
-            return iteratorIndex<endPtr;
+            return iteratorIndex % queueArrayLength < endPtr % queueArrayLength;
         }
 
         @Override
         public E next() {
-            return queueArray[iteratorIndex++];
+            return queueArray[iteratorIndex++ % queueArrayLength];
         }
     }
 }