diff --git a/C#进阶/C#进阶.sln b/C#进阶/C#进阶.sln index 9bbd9cc..16b732f 100644 --- a/C#进阶/C#进阶.sln +++ b/C#进阶/C#进阶.sln @@ -41,6 +41,10 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson9_顺序存储和链 EndProject 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}" EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson10_LinkedList", "Lesson10_LinkedList\Lesson10_LinkedList.csproj", "{FB78D018-414D-4F0A-8216-B65E0662A469}" +EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson10_LinkedList练习", "Lesson10_LinkedList练习\Lesson10_LinkedList练习.csproj", "{547A4860-2E6F-4022-802A-F34204F7ADF5}" +EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution Debug|Any CPU = Debug|Any CPU @@ -123,6 +127,14 @@ Global {EDA0CEB2-BB75-4149-8C0D-56C9A5286769}.Debug|Any CPU.Build.0 = Debug|Any CPU {EDA0CEB2-BB75-4149-8C0D-56C9A5286769}.Release|Any CPU.ActiveCfg = Release|Any CPU {EDA0CEB2-BB75-4149-8C0D-56C9A5286769}.Release|Any CPU.Build.0 = Release|Any CPU + {FB78D018-414D-4F0A-8216-B65E0662A469}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {FB78D018-414D-4F0A-8216-B65E0662A469}.Debug|Any CPU.Build.0 = Debug|Any CPU + {FB78D018-414D-4F0A-8216-B65E0662A469}.Release|Any CPU.ActiveCfg = Release|Any CPU + {FB78D018-414D-4F0A-8216-B65E0662A469}.Release|Any CPU.Build.0 = Release|Any CPU + {547A4860-2E6F-4022-802A-F34204F7ADF5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {547A4860-2E6F-4022-802A-F34204F7ADF5}.Debug|Any CPU.Build.0 = Debug|Any CPU + {547A4860-2E6F-4022-802A-F34204F7ADF5}.Release|Any CPU.ActiveCfg = Release|Any CPU + {547A4860-2E6F-4022-802A-F34204F7ADF5}.Release|Any CPU.Build.0 = Release|Any CPU EndGlobalSection GlobalSection(SolutionProperties) = preSolution HideSolutionNode = FALSE diff --git a/C#进阶/Lesson10_LinkedList/Lesson10_LinkedList.csproj b/C#进阶/Lesson10_LinkedList/Lesson10_LinkedList.csproj new file mode 100644 index 0000000..2150e37 --- /dev/null +++ b/C#进阶/Lesson10_LinkedList/Lesson10_LinkedList.csproj @@ -0,0 +1,10 @@ + + + + Exe + net8.0 + enable + enable + + + diff --git a/C#进阶/Lesson10_LinkedList/Program.cs b/C#进阶/Lesson10_LinkedList/Program.cs new file mode 100644 index 0000000..1df3d6f --- /dev/null +++ b/C#进阶/Lesson10_LinkedList/Program.cs @@ -0,0 +1,99 @@ +namespace Lesson10_LinkedList +{ + internal class Program + { + static void Main(string[] args) + { + #region 知识点一 LinkedList + //LinkedList 是一个双向链表 + //是C#为我们封装好的一个数据结构 + #endregion + + #region 知识点二 声明 + //需要引用命名空间 System.Collections.Generic + + //链表对象，需要掌握两个类 + //一个是链表本身 LinkedList，一个是链表节点 LinkedListNode + + LinkedList linkedList = new LinkedList(); + LinkedList linkedList2 = new LinkedList(); + #endregion + + #region 知识点三 增删查改 + + + //增 + //1.在链表尾部添加元素 + linkedList.AddLast(1); + //2.在链表头部添加元素 + linkedList.AddFirst(2); + //3.在某一个节点之后添加一个节点 + // 要指定节点，先得到上一个节点 + LinkedListNode n = linkedList.Find(1); + linkedList.AddAfter(n, 3); + //4.在某一个节点之前添加一个节点 + // 要指定节点，先得到下一个节点 + linkedList.AddBefore(n, 4); + + + //删 + //1.移除头节点 + linkedList.RemoveFirst(); + //2.移除尾节点 + linkedList.RemoveLast(); + //3.移除指定节点 + // 要指定节点，先找到节点 + linkedList.Remove(4);//根据值移除节点 + //4.清空 + linkedList.Clear(); + + linkedList.AddFirst(1); + linkedList.AddLast(2); + + //查 + //1.头节点 + LinkedListNode first = linkedList.First; + //2.尾节点 + LinkedListNode last = linkedList.Last; + //3.查找指定节点 + // 无法通过下标获取指定元素 + // 只能遍历查找节点 + LinkedListNode node = linkedList.Find(1);//根据值查找节点 + Console.WriteLine(node.Value); + node = linkedList.FindLast(1);//找不到会返回空 + //4.判断是否包含某个值 + bool contains = linkedList.Contains(1); + + + //改 + //先得到节点，再修改节点的值 + Console.WriteLine(linkedList.First.Value); + linkedList.First.Value = 100; + Console.WriteLine(linkedList.First.Value); + #endregion + + #region 知识点四 遍历 + //1.使用foreach遍历 + foreach (var item in linkedList) + { + Console.WriteLine(item); + } + //2.通过节点遍历 + //从头节点开始遍历 + LinkedListNode temp = linkedList.First; + while (temp != null) + { + Console.Write(temp.Value + " "); + temp = temp.Next;//指向下一个节点 + } + //从尾节点开始遍历 + temp = linkedList.Last; + while (temp != null) + { + Console.WriteLine(temp.Value + " "); + temp = temp.Previous;//指向上一个节点 + } + #endregion + } + } +} diff --git a/C#进阶/Lesson10_LinkedList练习/Lesson10_LinkedList练习.csproj b/C#进阶/Lesson10_LinkedList练习/Lesson10_LinkedList练习.csproj new file mode 100644 index 0000000..2150e37 --- /dev/null +++ b/C#进阶/Lesson10_LinkedList练习/Lesson10_LinkedList练习.csproj @@ -0,0 +1,10 @@ + + + + Exe + net8.0 + enable + enable + + + diff --git a/C#进阶/Lesson10_LinkedList练习/Program.cs b/C#进阶/Lesson10_LinkedList练习/Program.cs new file mode 100644 index 0000000..1c417fb --- /dev/null +++ b/C#进阶/Lesson10_LinkedList练习/Program.cs @@ -0,0 +1,29 @@ +namespace Lesson10_LinkedList练习 +{ + class Program + { + static void Main(string[] args) + { + LinkedList ints = new LinkedList(); + Random r = new Random(); + for (int i = 0; i < 10; i++) + { + ints.AddLast(r.Next(1,100)); + } + LinkedListNode temp = ints.First; + while (temp != null) + { + Console.Write(temp.Value + " "); + temp = temp.Next; + } + Console.WriteLine(); + Console.WriteLine("----------------"); + temp = ints.Last; + while (temp != null) + { + Console.Write(temp.Value + " "); + temp = temp.Previous; + } + } + } +}