From 5093997ca5fda265fea31243a649b0e29b8c6fb1 Mon Sep 17 00:00:00 2001
From: johnA1331 <53036378+johnA1331@users.noreply.github.com>
Date: Wed, 3 Mar 2021 20:43:31 +0800
Subject: [PATCH] Update README.md

---
 core-java-modules/core-java-collections-4/README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/core-java-modules/core-java-collections-4/README.md b/core-java-modules/core-java-collections-4/README.md
index 6e117c98b1..4fd77473d4 100644
--- a/core-java-modules/core-java-collections-4/README.md
+++ b/core-java-modules/core-java-collections-4/README.md
@@ -5,3 +5,4 @@
 ### Relevant Articles: 
 
 - [ArrayList vs. LinkedList vs. HashMap in Java](https://www.baeldung.com/java-arraylist-vs-linkedlist-vs-hashmap)
+- [Java Deque vs. Stack](https://www.baeldung.com/java-deque-vs-stack)