diff --git a/C#进阶/C#进阶.sln b/C#进阶/C#进阶.sln index a51d5e9..a94403f 100644 --- a/C#进阶/C#进阶.sln +++ b/C#进阶/C#进阶.sln @@ -65,6 +65,10 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson15_lambda表达式", EndProject Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson15_lambda表达式练习", "Lesson15_lambad表达式练习\Lesson15_lambda表达式练习.csproj", "{E0931580-D76C-4434-B059-149AEED828ED}" EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson16_List排序", "Lesson16_List排序\Lesson16_List排序.csproj", "{8417820B-342A-423C-9865-29784EB5F4A6}" +EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson16_List排序练习", "Lesson16_List排序练习\Lesson16_List排序练习.csproj", "{D6D1193A-668E-454A-BFBF-6186A2C76509}" +EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution Debug|Any CPU = Debug|Any CPU @@ -195,6 +199,14 @@ Global {E0931580-D76C-4434-B059-149AEED828ED}.Debug|Any CPU.Build.0 = Debug|Any CPU {E0931580-D76C-4434-B059-149AEED828ED}.Release|Any CPU.ActiveCfg = Release|Any CPU {E0931580-D76C-4434-B059-149AEED828ED}.Release|Any CPU.Build.0 = Release|Any CPU + {8417820B-342A-423C-9865-29784EB5F4A6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {8417820B-342A-423C-9865-29784EB5F4A6}.Debug|Any CPU.Build.0 = Debug|Any CPU + {8417820B-342A-423C-9865-29784EB5F4A6}.Release|Any CPU.ActiveCfg = Release|Any CPU + {8417820B-342A-423C-9865-29784EB5F4A6}.Release|Any CPU.Build.0 = Release|Any CPU + {D6D1193A-668E-454A-BFBF-6186A2C76509}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {D6D1193A-668E-454A-BFBF-6186A2C76509}.Debug|Any CPU.Build.0 = Debug|Any CPU + {D6D1193A-668E-454A-BFBF-6186A2C76509}.Release|Any CPU.ActiveCfg = Release|Any CPU + {D6D1193A-668E-454A-BFBF-6186A2C76509}.Release|Any CPU.Build.0 = Release|Any CPU EndGlobalSection GlobalSection(SolutionProperties) = preSolution HideSolutionNode = FALSE diff --git a/C#进阶/ConsoleApp1/ConsoleApp1.csproj b/C#进阶/ConsoleApp1/ConsoleApp1.csproj new file mode 100644 index 0000000..2150e37 --- /dev/null +++ b/C#进阶/ConsoleApp1/ConsoleApp1.csproj @@ -0,0 +1,10 @@ + + + + Exe + net8.0 + enable + enable + + + diff --git a/C#进阶/ConsoleApp1/Program.cs b/C#进阶/ConsoleApp1/Program.cs new file mode 100644 index 0000000..4bc8bfb --- /dev/null +++ b/C#进阶/ConsoleApp1/Program.cs @@ -0,0 +1,25 @@ +namespace ConsoleApp1 +{ + class shopItem + { + public int price; + + public shopItem(int price) + { + this.price = price; + } + + } + class Program + { + static void Main(string[] args) + { + List shopItems = new List();//创建一个List来存放商店物品 + shopItems.Add(new shopItem(3));//往List中添加每个物品的价格 + shopItems.Add(new shopItem(1)); + shopItems.Add(new shopItem(2)); + + shopItems.Sort((a, b) => { return a.price > b.price ? 1 : -1; });//使用Sort方法对List进行排序，按照价格从低到高排序 + } + } +} diff --git a/C#进阶/Lesson16_List排序/Lesson16_List排序.csproj b/C#进阶/Lesson16_List排序/Lesson16_List排序.csproj new file mode 100644 index 0000000..2150e37 --- /dev/null +++ b/C#进阶/Lesson16_List排序/Lesson16_List排序.csproj @@ -0,0 +1,10 @@ + + + + Exe + net8.0 + enable + enable + + + diff --git a/C#进阶/Lesson16_List排序/Program.cs b/C#进阶/Lesson16_List排序/Program.cs new file mode 100644 index 0000000..25b3c5a --- /dev/null +++ b/C#进阶/Lesson16_List排序/Program.cs @@ -0,0 +1,146 @@ +using System.Collections.Generic; +namespace Lesson16_List排序 +{ + class Program + { + static void Main(string[] args) + { + #region 知识点一 List自带的排序方法 + List list = new List(); + list.Add(3); + list.Add(2); + list.Add(4); + list.Add(6); + list.Add(5); + list.Add(1); + for (int i = 0; i < list.Count; i++) + { + Console.WriteLine(list[i]); + } + Console.WriteLine("_________________________"); + //list提供了sort方法，可以对list进行排序，默认是升序排序 + list.Sort(); + for (int i = 0; i < list.Count; i++) + { + Console.WriteLine(list[i]); + } + //Arraylist中也有sort方法 + #endregion + + #region 知识点二 自定义类的排序 + Console.WriteLine("_________________________"); + List itemList = new List(); + itemList.Add(new Item(45)); + itemList.Add(new Item(10)); + itemList.Add(new Item(99)); + itemList.Add(new Item(24)); + itemList.Add(new Item(100)); + itemList.Add(new Item(12)); + itemList.Sort();//无法排序，自定义类没有默认的排序规则，不知道按哪个字段排序 + for (int i = 0; i < itemList.Count; i++) + { + Console.WriteLine(itemList[i].money); + } + #endregion + + #region 知识点三 通过委托函数进行排序 + List shopItems = new List(); + shopItems.Add(new ShopItem(5)); + shopItems.Add(new ShopItem(2)); + shopItems.Add(new ShopItem(3)); + shopItems.Add(new ShopItem(6)); + shopItems.Add(new ShopItem(4)); + shopItems.Add(new ShopItem(1)); + + //通过委托函数进行排序 + //shopItems.Sort(SortShopItem); + + //通过匿名函数表达式进行排序 + //shopItems.Sort(delegate(ShopItem a,ShopItem b) { + // if (a.price > b.price) + // { + // return 1; + // } + // else if (a.price == b.price) + // { + // return 0; + // } + // else + // { + // return -1; + // } + //}); + + //通过lambda表达式结合三木运算符进行排序 + shopItems.Sort((a, b) => { + return a.price > b.price ? 1 : -1; + }); + + Console.WriteLine("_________________________"); + for (int i = 0; i < shopItems.Count; i++) + { + Console.WriteLine(shopItems[i].price); + } + #endregion + } + static int SortShopItem(ShopItem a,ShopItem b) + { + if (a.price > b.price) + { + return 1; + }else if (a.price == b.price) + { + return 0; + } + else + { + return -1; + } + } + } + class Item : IComparable + { + public int money; + public Item(int money) + { + this.money = money; + } + + public int CompareTo(Item other) + { + //返回值的含义： + //小于0： + //相当于放在当前对象前面 + //等于0： + //保持当前的位置不变 + //大于0： + //相当于放在当前对象后面 + + + if ( this.money > other.money) + { + return 1; + }else if (this.money == other.money) + { + return 0; + } + else + { + return -1; + } + } + } + class ShopItem + { + public int price; + public ShopItem(int price) + { + this.price = price; + } + } +} +//总结： +//系统自带的变量(int, float, double......) 一般都可以直接 Sort +// 自定义类 Sort 有两种方式 +// 1. 继承接口 IComparable +// 2. 在 Sort 中传入委托函数 \ No newline at end of file diff --git a/C#进阶/Lesson16_List排序练习/Lesson16_List排序练习.csproj b/C#进阶/Lesson16_List排序练习/Lesson16_List排序练习.csproj new file mode 100644 index 0000000..2150e37 --- /dev/null +++ b/C#进阶/Lesson16_List排序练习/Lesson16_List排序练习.csproj @@ -0,0 +1,10 @@ + + + + Exe + net8.0 + enable + enable + + + diff --git a/C#进阶/Lesson16_List排序练习/Program.cs b/C#进阶/Lesson16_List排序练习/Program.cs new file mode 100644 index 0000000..e9f268e --- /dev/null +++ b/C#进阶/Lesson16_List排序练习/Program.cs @@ -0,0 +1,157 @@ +namespace Lesson16_List排序练习 +{ + class Monster + { + public int atk; + public int def; + public int hp; + public Monster(int atk, int def, int hp) + { + this.atk = atk; + this.def = def; + this.hp = hp; + } + + override public string ToString() + { + return $"怪物：atk={atk},def={def},hp={hp}"; + } + } + enum E_Quality + { + 白色 = 0, + 绿色 = 1, + 蓝色 = 2, + 紫色 = 3, + 橘色 = 4 + } + enum E_ItemType + { + 武器 = 0, + 护甲 = 1, + 饰品 = 2 + } + class Item + { + public string name; + public E_Quality quality; + public E_ItemType itemType; + + public Item(string name, E_Quality quality, E_ItemType itemType) + { + this.name = name; + this.quality = quality; + this.itemType = itemType; + } + + public override string ToString() + { + return $"物品：品质={quality},类型={itemType},名字={name}"; + } + } + class Program + { + static void Main(string[] args) + { + List monsters = new List(); + Random r = new Random(); + for (int i = 0; i < 10; i++) + { + monsters.Add(new Monster(r.Next(1, 10), r.Next(1, 10), r.Next(1, 10))); + Console.WriteLine(monsters[i]); + } + Console.WriteLine("_______________________________"); + try + { + int inputIndex = int.Parse(Console.ReadLine()); + switch (inputIndex) + { + case 1: + monsters.Sort((m1, m2) => m1.atk - m2.atk); + break; + case 2: + monsters.Sort((m1, m2) => m1.def - m2.def); + break; + case 3: + monsters.Sort((m1, m2) => m1.hp - m2.hp); + break; + case 4: + //反转API + monsters.Reverse(); + break; + } + } + catch + { + Console.WriteLine("ERROR"); + } + for (int i = 0; i < 10; i++) + { + Console.WriteLine(monsters[i]); + } + Console.WriteLine("_______________________________"); + + List items = new List(); + for (int i = 0; i < 100; i++) + { + E_Quality randomQuality = (E_Quality)r.Next(0, Enum.GetValues(typeof(E_Quality)).Length); + E_ItemType randomItemType = (E_ItemType)r.Next(0, Enum.GetValues(typeof(E_ItemType)).Length); + + items.Add(new Item("Item" + r.Next(100, 201), randomQuality, randomItemType)); + Console.WriteLine(items[i]); + } + Console.WriteLine("_______________________________"); + items.Sort((i1, i2) => { + //先按类型比 + if (i1.itemType != i2.itemType) + { + return i1.itemType - i2.itemType; + } + //再按品质比 + else if (i1.quality != i2.quality) + { + return i2.quality - i1.quality; + } + else + { + return i1.name.CompareTo(i2.name); + } + }); + for (int i = 0; i < 100; i++) + { + Console.WriteLine(items[i]); + } + Console.WriteLine("_______________________________"); + + Dictionary dic = new Dictionary(); + dic.Add(1, "532132"); + dic.Add(3, "532132"); + dic.Add(4, "532132"); + dic.Add(2, "532132"); + dic.Add(6, "532132"); + dic.Add(5, "532132"); + + foreach (var kv in dic) + { + Console.WriteLine($"Key={kv.Key},Value={kv.Value}"); + } + Console.WriteLine("_______________________________"); + List> list = new List>(); + + foreach (KeyValuePair item in dic) + { + list.Add(item); + } + + list.Sort((p1, p2) => + { + return p1.Key - p2.Key; + }); + + for(int i = 0;i < list.Count;i++) + { + Console.WriteLine(list[i].Key + " " + list[i].Value); + } + } + } +}