添加Lesson9
This commit is contained in:
@@ -37,6 +37,10 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson8_Dictionary", "Lesso
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson8_Dictionary练习", "Lesson8_Dictionary练习\Lesson8_Dictionary练习.csproj", "{1481414C-D336-4691-A45A-6A8CABFD33FE}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson9_顺序存储和链式存储", "Lesson9_顺序存储和链式存储\Lesson9_顺序存储和链式存储.csproj", "{317AE884-9270-4AEA-8181-288BC4F1FB2E}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson9_顺序存储和链式存储练习", "Lesson9_顺序存储和链式存储练习\Lesson9_顺序存储和链式存储练习.csproj", "{EDA0CEB2-BB75-4149-8C0D-56C9A5286769}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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@@ -111,6 +115,14 @@ Global
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{1481414C-D336-4691-A45A-6A8CABFD33FE}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{1481414C-D336-4691-A45A-6A8CABFD33FE}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{1481414C-D336-4691-A45A-6A8CABFD33FE}.Release|Any CPU.Build.0 = Release|Any CPU
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{317AE884-9270-4AEA-8181-288BC4F1FB2E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{317AE884-9270-4AEA-8181-288BC4F1FB2E}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{317AE884-9270-4AEA-8181-288BC4F1FB2E}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{317AE884-9270-4AEA-8181-288BC4F1FB2E}.Release|Any CPU.Build.0 = Release|Any CPU
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{EDA0CEB2-BB75-4149-8C0D-56C9A5286769}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{EDA0CEB2-BB75-4149-8C0D-56C9A5286769}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{EDA0CEB2-BB75-4149-8C0D-56C9A5286769}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{EDA0CEB2-BB75-4149-8C0D-56C9A5286769}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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@@ -0,0 +1,10 @@
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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>net8.0</TargetFramework>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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</PropertyGroup>
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</Project>
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@@ -0,0 +1,154 @@
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namespace Lesson9_顺序存储和链式存储
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{
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class Program
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{
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static void Main(string[] args)
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{
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#region 知识点一 数据结构
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// 数据结构
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// 数据结构是计算机存储、组织数据的方式(规则)
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// 数据结构是指相互之间存在一种或多种特定关系的数据元素的集合
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// 比如自定义的一个类也可以称为一种数据结构 自己定义的数据组合规则
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// 不要把数据结构想的太复杂
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// 简单点理解,就是人定义的 存储数据 和 表示数据之间关系 的规则而已
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// 常用的数据结构(前辈总结和制定的一些经典规则)
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// 数组、栈、队列、链表、树、图、堆、散列表
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#endregion
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#region 知识点二 线性表
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//线性表是一种数据结构,是由N个具有相同特性的数据元素的有限序列
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//比如数组、Arraylist、stack、queue、链表等
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#endregion
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//顺序存储和链式存储 是数据结构重两种 存储结构
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#region 知识点三 顺序存储
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//数组、stack、queue、list、arraylist —— 顺序存储
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//只是 数组、stack、queue的 组织规则不同
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//顺序存储:
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//用一组地址连续的存储单元一次存储线性表的各个元素
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#endregion
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#region 知识点四 链式存储
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//单向链表、双向链表、循环链表 —— 链式存储
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//链式存储(连接存储):
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//用一组任意的存储单元存储线性表重的各个数据元素
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#endregion
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LinkedList<int> link = new LinkedList<int>();
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link.Add(1);
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link.Add(2);
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link.Add(3);
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link.Add(4);
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LinkedNode<int> node = link.head;
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while (node != null)
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{
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Console.WriteLine(node.value);
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node = node.nextNode;
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}
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link.Remove(2);
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Console.WriteLine("--------");
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node = link.head;
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while (node != null)
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{
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Console.WriteLine(node.value);
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node = node.nextNode;
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}
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link.Remove(1);
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Console.WriteLine("--------");
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node = link.head;
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while (node != null)
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{
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Console.WriteLine(node.value);
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node = node.nextNode;
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}
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link.Add(999);
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Console.WriteLine("--------");
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node = link.head;
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while (node != null)
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{
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Console.WriteLine(node.value);
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node = node.nextNode;
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}
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}
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}
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#region 知识点五 自己实现一个最贱的的单向链表
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/// <summary>
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/// 单项链表节点
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/// </summary>
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/// <typeparam name="T"></typeparam>
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class LinkedNode<T>
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{
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public T value;
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//存储下一个元素
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public LinkedNode<T> nextNode;
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public LinkedNode(T value)
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{
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this.value = value;
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}
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}
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/// <summary>
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/// 单项链表类,管理节点
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/// </summary>
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/// <typeparam name="T"></typeparam>
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class LinkedList<T>
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{
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public LinkedNode<T> head;
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public LinkedNode<T> last;
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public void Add(T value)
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{
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LinkedNode<T> node = new LinkedNode<T>(value);
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if (head == null)
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{
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head = node;
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last = node;
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}
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else
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{
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last.nextNode = node;
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last = node;
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}
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}
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public void Remove(T value)
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{
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if (head == null)
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{
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return;
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}
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if (head.value.Equals(value))
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{
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head = head.nextNode;
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//如果头节点被移除了,那么证明只有一个节点,那么尾也要清空
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if (head == null)
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{
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last = null;
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}
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return;
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}
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LinkedNode<T> node = head;
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while (node.nextNode != null)
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{
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if (node.nextNode.value.Equals(value))
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{
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node.nextNode = node.nextNode.nextNode;
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break;
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}
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}
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}
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}
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#endregion
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#region 知识点六 顺序存储和链式存储的优缺点
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//从增删查改的角度去思考
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//增:链式存储 计算上 优于顺序存储 (中间插入时链式不用像顺序一样去移动位置)
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//删:链式存储 计算上 优于顺序存储 (中间删除时链式不用像顺序一样去移动位置)
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//查:顺序存储 使用上 优于链式存储 (数组可以直接通过下标得到元素,链式需要遍历)
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//改:顺序存储 使用上 优于链式存储 (数组可以直接通过下标得到元素,链式需要遍历)
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#endregion
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}
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@@ -0,0 +1,10 @@
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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>net8.0</TargetFramework>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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</PropertyGroup>
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</Project>
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@@ -0,0 +1,174 @@
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namespace Lesson9_顺序存储和链式存储练习
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{
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class LinkNode<T>
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{
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public T value;
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public LinkNode<T> nextNode;
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public LinkNode<T> frontNode;
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public LinkNode(T value)
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{
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this.value = value;
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nextNode = null;
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frontNode = null;
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}
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}
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class LinkList<T>
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{
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private LinkNode<T> head;
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private LinkNode<T> tail;
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private int count;
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public LinkList()
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{
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count = 0;
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head = null;
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tail = null;
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}
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public LinkNode<T> Head
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{
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get
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{
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return head;
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}
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}
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public LinkNode<T> Tail
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{
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get
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{
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return tail;
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}
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}
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public int Count
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{
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get
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{
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return count;
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}
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}
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public void Add(T value)
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{
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LinkNode<T> node = new LinkNode<T>(value);
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if (head == null)
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{
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head = node;
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tail = node;
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Console.WriteLine("空,已加节点并赋值");
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}
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else
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{
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tail.nextNode = node;
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tail.nextNode.frontNode = tail;
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tail = node;
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tail.nextNode = null;
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Console.WriteLine("添加尾部节点");
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}
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++count;
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}
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public void PrintAllNodesFront()
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{
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if (head == null)
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{
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Console.WriteLine("链表为空");
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return;
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}
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LinkNode<T> node = head;
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while (node != null)
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{
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Console.Write(node.value + " ");
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node = node.nextNode;
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}
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}
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public void PrintAllNodesLast()
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{
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if (head == null)
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{
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Console.WriteLine("链表为空");
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return;
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}
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LinkNode<T> node = tail;
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while (node != null)
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{
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Console.Write(node.value + " ");
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node = node.frontNode;
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}
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}
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public void RemoveAt(int index)
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{
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if (index < 0 || index >= count)
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{
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Console.WriteLine($"目前只有{count}个node,输入无效");
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return;
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}
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int tempCount = 0;
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LinkNode<T> tempNode = head;
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while (true)
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{
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if (tempCount == index)
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{
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//找到节点
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if (tempNode.frontNode != null)
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{
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tempNode.frontNode.nextNode = tempNode.nextNode;
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}
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if (tempNode.nextNode != null)
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{
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tempNode.nextNode.frontNode = tempNode.frontNode;
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}
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if (index == 0)
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{
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head = tempNode.nextNode;
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}else if (index == count - 1)
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{
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tail = tail.frontNode;
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}
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count--;
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break;
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}
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tempNode = tempNode.nextNode;
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tempCount++;
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}
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}
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}
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class Program
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{
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static void Main(string[] args)
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{
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LinkList<int> list = new LinkList<int>();
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list.Add(1);
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list.Add(2);
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list.Add(3);
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list.Add(4);
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Console.WriteLine("Node数量:");
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Console.WriteLine(list.Count);
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Console.WriteLine("-------------------");
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Console.WriteLine("反向遍历");
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list.PrintAllNodesLast();
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Console.WriteLine();
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Console.WriteLine("-------------------");
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Console.WriteLine("正向遍历");
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list.PrintAllNodesFront();//正向遍历
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Console.WriteLine();
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Console.WriteLine("-------------------");
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Console.WriteLine("删除后正向遍历");
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list.RemoveAt(0);
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list.PrintAllNodesFront();//正向遍历
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Console.WriteLine();
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Console.WriteLine("-------------------");
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Console.WriteLine("删除后反向遍历");
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list.RemoveAt(1);
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list.PrintAllNodesFront();//正向遍历
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Console.WriteLine();
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Console.WriteLine("-------------------");
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}
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}
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}
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Block a user