From 787e0e30f9c63e9e54446cf7b6c5924e71992288 Mon Sep 17 00:00:00 2001
From: xiaok29 <1526783667@qq.com>
Date: Thu, 16 May 2024 10:40:16 +0800
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=9E=20fix:=20=E5=8F=8C=E5=90=91?=
 =?UTF-8?q?=E9=98=9F=E5=88=97=E4=B8=BA=E7=A9=BA=E6=97=B6,pop=E4=B8=8D?=
 =?UTF-8?q?=E6=93=8D=E4=BD=9C=E6=8C=87=E5=90=91?=
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---
 codes/go/chapter_stack_and_queue/array_deque.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/codes/go/chapter_stack_and_queue/array_deque.go b/codes/go/chapter_stack_and_queue/array_deque.go
index 85d98aca5..37b436f2b 100644
--- a/codes/go/chapter_stack_and_queue/array_deque.go
+++ b/codes/go/chapter_stack_and_queue/array_deque.go
@@ -72,6 +72,9 @@ func (q *arrayDeque) pushLast(num int) {
 /* 队首出队 */
 func (q *arrayDeque) popFirst() any {
 	num := q.peekFirst()
+	if num == nil {
+		return nil
+	}
 	// 队首指针向后移动一位
 	q.front = q.index(q.front + 1)
 	q.queSize--
@@ -81,6 +84,9 @@ func (q *arrayDeque) popFirst() any {
 /* 队尾出队 */
 func (q *arrayDeque) popLast() any {
 	num := q.peekLast()
+	if num == nil {
+		return nil
+	}
 	q.queSize--
 	return num
 }