Made peek() return null on empty queue

2019-01-17 11:55:56 -05:00 · 2019-01-17 11:55:56 -05:00 · ab3bb8b69b
parent 731d0f68a0
commit ab3bb8b69b
1 changed files with 1 additions and 0 deletions
--- a/java/ods/SLList.java
+++ b/java/ods/SLList.java
@ -80,6 +80,7 @@ public class SLList<T> extends AbstractQueue<T> {

 	@Override
 	public T peek() {
+		if (n == 0) return null;
 		return head.x;
 	}