Kister/Csharp
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

添加Lesson16

Browse Source
This commit is contained in:
Kister Hakusan
2025-10-21 20:37:12 +08:00
parent b1d4959956
commit faee796928
7 changed files with 370 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
C#进阶/C#进阶.sln
+12
View File
@@ -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
C#进阶/ConsoleApp1/ConsoleApp1.csproj
+10
View File
@@ -0,0 +1,10 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net8.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
</Project>
C#进阶/ConsoleApp1/Program.cs
+25
View File
@@ -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<shopItem> shopItems = new List<shopItem>();//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
}
}
}
C#进阶/Lesson16_List排序/Lesson16_List排序.csproj
+10
View File
@@ -0,0 +1,10 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net8.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
</Project>
C#进阶/Lesson16_List排序/Program.cs
+146
View File
@@ -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<int> list = new List<int>();
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<Item> itemList = new List<Item>();
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<ShopItem> shopItems = new List<ShopItem>();
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<Item>
{
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
C#进阶/Lesson16_List排序练习/Lesson16_List排序练习.csproj
+10
View File
@@ -0,0 +1,10 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net8.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
</Project>
C#进阶/Lesson16_List排序练习/Program.cs
+157
View File
@@ -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 $"物品：品质={quality},类型={itemType},名字={name}";
}
}
class Program
{
static void Main(string[] args)
{
List<Monster> monsters = new List<Monster>();
Random r = new Random();
for (int i = 0; i < 10; i++)
{
monsters.Add(new Monster(r.Next(1, 10), r.Next(1, 10), r.Next(1, 10)));
Console.WriteLine(monsters[i]);
}
Console.WriteLine("_______________________________");
try
{
int inputIndex = int.Parse(Console.ReadLine());
switch (inputIndex)
{
case 1:
monsters.Sort((m1, m2) => m1.atk - m2.atk);
break;
case 2:
monsters.Sort((m1, m2) => m1.def - m2.def);
break;
case 3:
monsters.Sort((m1, m2) => m1.hp - m2.hp);
break;
case 4:
//反转API
monsters.Reverse();
break;
}
}
catch
{
Console.WriteLine("ERROR");
}
for (int i = 0; i < 10; i++)
{
Console.WriteLine(monsters[i]);
}
Console.WriteLine("_______________________________");
List<Item> items = new List<Item>();
for (int i = 0; i < 100; i++)
{
E_Quality randomQuality = (E_Quality)r.Next(0, Enum.GetValues(typeof(E_Quality)).Length);
E_ItemType randomItemType = (E_ItemType)r.Next(0, Enum.GetValues(typeof(E_ItemType)).Length);
items.Add(new Item("Item" + r.Next(100, 201), randomQuality, randomItemType));
Console.WriteLine(items[i]);
}
Console.WriteLine("_______________________________");
items.Sort((i1, i2) => {
//先按类型比
if (i1.itemType != i2.itemType)
{
return i1.itemType - i2.itemType;
}
//再按品质比
else if (i1.quality != i2.quality)
{
return i2.quality - i1.quality;
}
else
{
return i1.name.CompareTo(i2.name);
}
});
for (int i = 0; i < 100; i++)
{
Console.WriteLine(items[i]);
}
Console.WriteLine("_______________________________");
Dictionary<int, string> dic = new Dictionary<int, string>();
dic.Add(1, "532132");
dic.Add(3, "532132");
dic.Add(4, "532132");
dic.Add(2, "532132");
dic.Add(6, "532132");
dic.Add(5, "532132");
foreach (var kv in dic)
{
Console.WriteLine($"Key={kv.Key},Value={kv.Value}");
}
Console.WriteLine("_______________________________");
List<KeyValuePair<int, string>> list = new List<KeyValuePair<int, string>>();
foreach (KeyValuePair<int,string> 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);
}
}
}
}