The Doubly linked classes now work, but still aren't commented.

fourthassignment/src/main/java/com/ds/fourthassignment/DoublyLNode.java

@@ -2,10 +2,11 @@ package com.ds.fourthassignment;
 
 /**
  * This now supports the scientist type
+ * 
+ * @author Michael Lundquist
  */
 
 public class DoublyLNode {
-
 	private Scientist data; 
 	private DoublyLNode next;
 	private DoublyLNode previous; 

fourthassignment/src/main/java/com/ds/fourthassignment/DoublyLinkedList.java

 package com.ds.fourthassignment;
 
+/**
+ * 
+ * @author Michael Lundquist
+ */
 public class DoublyLinkedList {
 
 	private DoublyLNode head;
@@ -91,17 +95,16 @@ public class DoublyLinkedList {
 	 * @return the index of this scientist, or -1
 	 */
 	public int indexOfElement(Scientist s){
-		DoublyLNode curNode = head;
 		int curIndex = 0;
-		do{
+		for( 
+			DoublyLNode curNode = this.head;
+			curNode != null;
+			curIndex ++, curNode = curNode.getNext()
+		){
 			if(curNode.getData().compareTo(s) == 0){
 				return curIndex;
 			}
-			curNode = curNode.getNext();
-			curIndex ++;
-		} while(curNode.hasNext());
+		}
 		return -1;
-	}
-
-	
+	}	
 }
\ No newline at end of file

fourthassignment/src/main/java/com/ds/fourthassignment/LNode.java

 package com.ds.fourthassignment;
 
+/**
+ * 
+ * @author Michael Lundquist
+ */
+
 public class LNode {
 	
 	Integer data;