From 9d0baa8d7101ce79183b161916db1dbf900e487c Mon Sep 17 00:00:00 2001
From: Bunny <1319900154@qq.com>
Date: Mon, 3 Feb 2025 17:35:00 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E8=BF=AD=E4=BB=A3=E5=99=A8=E6=A8=A1?=
 =?UTF-8?q?=E5=BC=8F?=
MIME-Version: 1.0
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---
 .../设计模式-v2/image-20250203173419155.png   | Bin 0 -> 14082 bytes
 README/设计模式-v2.md                         |  97 +++++++++++++++++-
 .../java/cn/bunny/pattern13/Iterator.java     |  74 +++++++++++++
 3 files changed, 168 insertions(+), 3 deletions(-)
 create mode 100644 README/images/设计模式-v2/image-20250203173419155.png
 create mode 100644 pattern/src/main/java/cn/bunny/pattern13/Iterator.java

diff --git a/README/images/设计模式-v2/image-20250203173419155.png b/README/images/设计模式-v2/image-20250203173419155.png
new file mode 100644
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diff --git a/README/设计模式-v2.md b/README/设计模式-v2.md
index 7592b24..b2292ec 100644
--- a/README/设计模式-v2.md
+++ b/README/设计模式-v2.md
@@ -1098,7 +1098,7 @@ public class Adapter3 {
 
 ---
 
-## 组合模式---结构型
+## 组合模式---结构型1
 
 ---
 
@@ -1106,7 +1106,7 @@ public class Adapter3 {
 
 ---
 
-## 代理模式---结构型
+## 代理模式---结构型1
 
 ---
 
@@ -1604,7 +1604,7 @@ public class BakeDemo {
 
 ---
 
-## 状态模式---行为型
+## 状态模式---行为型1
 
 ---
 
@@ -1817,6 +1817,97 @@ public class Memo {
 
 ## 迭代器模式---行为型
 
+**定义：**提供一种方法顺序访问一个聚合对象中的哥哥元素，而不是暴露其内部的表示。
+
+![image-20250203173419155](./images/设计模式-v2/image-20250203173419155.png)
+
+需要角色：抽象迭代器、具体迭代器、抽象聚合类、具体聚合类。
+
+### 简单示例
+
+#### 示例代码
+
+```java
+public class Iterator {
+
+    public static void main(String[] args) {
+        ListContainer listContainer = new ListContainer();
+        listContainer.add("序号1");
+        listContainer.add("序号2");
+        listContainer.add("序号3");
+        listContainer.add("序号4");
+
+        MyIterator iterator = listContainer.iterator();
+        while (iterator.hasNext()) {
+            System.out.println(iterator.next());
+        }
+    }
+
+    // 迭代器接口
+    interface MyIterator {
+
+        boolean hasNext();
+
+        Object next();
+    }
+
+    // 定义容器
+    interface MyContainer {
+        void add(Object o);
+
+        void remove(Object o);
+
+        MyIterator iterator();
+    }
+
+    // 列表操作容器
+    static class ListContainer implements MyContainer {
+        private final List<Object> list = new ArrayList<>();
+
+        @Override
+        public void add(Object o) {
+            list.add(o);
+        }
+
+        @Override
+        public void remove(Object o) {
+            list.remove(o);
+        }
+
+        @Override
+        public MyIterator iterator() {
+            return new MyIteratorImpl();
+        }
+
+        class MyIteratorImpl implements MyIterator {
+
+            private int index = 0;
+
+            @Override
+            public boolean hasNext() {
+                return index < list.size();
+            }
+
+            @Override
+            public Object next() {
+                Object object = list.get(index);
+                index++;
+                return object;
+            }
+        }
+    }
+}
+```
+
+#### 运行结果：
+
+```java
+序号1
+序号2
+序号3
+序号4
+```
+
 ---
 
 ## 访问者模式---行为型
diff --git a/pattern/src/main/java/cn/bunny/pattern13/Iterator.java b/pattern/src/main/java/cn/bunny/pattern13/Iterator.java
new file mode 100644
index 0000000..176ec3d
--- /dev/null
+++ b/pattern/src/main/java/cn/bunny/pattern13/Iterator.java
@@ -0,0 +1,74 @@
+package cn.bunny.pattern13;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Iterator {
+
+    public static void main(String[] args) {
+        ListContainer listContainer = new ListContainer();
+        listContainer.add("序号1");
+        listContainer.add("序号2");
+        listContainer.add("序号3");
+        listContainer.add("序号4");
+
+        MyIterator iterator = listContainer.iterator();
+        while (iterator.hasNext()) {
+            System.out.println(iterator.next());
+        }
+    }
+
+    // 迭代器接口
+    interface MyIterator {
+
+        boolean hasNext();
+
+        Object next();
+    }
+
+    // 定义容器
+    interface MyContainer {
+        void add(Object o);
+
+        void remove(Object o);
+
+        MyIterator iterator();
+    }
+
+    // 列表操作容器
+    static class ListContainer implements MyContainer {
+        private final List<Object> list = new ArrayList<>();
+
+        @Override
+        public void add(Object o) {
+            list.add(o);
+        }
+
+        @Override
+        public void remove(Object o) {
+            list.remove(o);
+        }
+
+        @Override
+        public MyIterator iterator() {
+            return new MyIteratorImpl();
+        }
+
+        class MyIteratorImpl implements MyIterator {
+
+            private int index = 0;
+
+            @Override
+            public boolean hasNext() {
+                return index < list.size();
+            }
+
+            @Override
+            public Object next() {
+                Object object = list.get(index);
+                index++;
+                return object;
+            }
+        }
+    }
+}