From e34723423cba1f1aab68aecdbede01589cdbaf21 Mon Sep 17 00:00:00 2001
From: zhangyang1995 <523773826@qq.com>
Date: Tue, 11 Feb 2020 21:39:13 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AF=B9pop=E4=BF=AE=E6=94=B9?=
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---
 src/main/java/com/github/hcsp/Stack.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main/java/com/github/hcsp/Stack.java b/src/main/java/com/github/hcsp/Stack.java
index db23e86..aa02d03 100644
--- a/src/main/java/com/github/hcsp/Stack.java
+++ b/src/main/java/com/github/hcsp/Stack.java
@@ -21,6 +21,7 @@ public Object pop() {
         if (size == 0) {
             throw new EmptyStackException();
         }
+        elements[size] = null;
         return elements[--size];
     }