From d8bf0b02d163bde9b3ae90640a63fd0d66b8a1dd Mon Sep 17 00:00:00 2001
From: moonache <476681765@qq.com>
Date: Fri, 30 Dec 2022 14:28:39 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=20C#=20=E5=86=85=E7=BD=AE?=
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RT
---
 docs/chapter_stack_and_queue/deque.md | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/docs/chapter_stack_and_queue/deque.md b/docs/chapter_stack_and_queue/deque.md
index ca55f822..41d9f449 100644
--- a/docs/chapter_stack_and_queue/deque.md
+++ b/docs/chapter_stack_and_queue/deque.md
@@ -167,5 +167,28 @@ comments: true
 === "C#"
 
     ```csharp title="deque.cs"
+    /* 初始化双向队列 */
+    /* LinkedList 是 C# 中使用双向链表实现的双向队列 */
+    LinkedList<int> deque = new LinkedList<int>();
 
+    /* 元素入队 */
+    deque.AddLast(2);   // 添加至队尾
+    deque.AddLast(5);
+    deque.AddLast(4);
+    deque.AddFirst(3);  // 添加至队首
+    deque.AddFirst(1);
+
+    /* 访问元素 */
+    int peekFirst = deque.First.Value;  // 队首元素
+    int peekLast = deque.Last.Value;    // 队尾元素
+
+    /* 元素出队 */
+    deque.RemoveFirst();  // 队首元素出队
+    deque.RemoveLast();   // 队尾元素出队
+
+    /* 获取双向队列的长度 */
+    int size = deque.Count;
+
+    /* 判断双向队列是否为空 */
+    bool isEmpty = deque.Count == 0;
     ```