添加Lesson1，ArrayList

2025-10-10 09:39:57 +08:00
parent 341fa3a006
commit 114536061f
6 changed files with 227 additions and 1 deletions
@@ -0,0 +1,85 @@
+using System.Collections;
+
+namespace Lesson1_ArrayList练习题
+{
+    class Backpack
+    {
+        ArrayList stuff;
+        int money;
+        public Backpack() 
+        {
+            money = 0;
+            stuff = new ArrayList();
+        }
+        public Backpack(int money)
+        {
+            stuff = new ArrayList();
+            this.money = money;
+        }
+        public void ShowBackPack()
+        {
+            Console.WriteLine("背包物品有：");
+            for (int i = 0; i < stuff.Count; i++)
+            {
+                if (i + 1 != stuff.Count)
+                {
+                    Console.Write(stuff[i] + "、");
+                }
+                else
+                {
+                    Console.WriteLine(stuff[i]);
+                }
+            }
+        }
+        public void BuyStuff(Object obj,int cost) 
+        {
+            if(cost > money)
+            {
+                Console.WriteLine("余额不足");
+            }
+            else
+            {
+                stuff.Add(obj);
+                money -= cost;
+                Console.WriteLine("成功购买物品：" + obj);
+            }
+        }
+        public void SoldStuff(object obj,int earned)
+        {
+            if (stuff.Contains(obj))
+            {
+                stuff.Remove(obj);
+                money += earned;
+                Console.WriteLine("成功出售物品：" + obj);
+            }
+            else
+            {
+                Console.WriteLine("没有该物品，无法出售：" + obj);
+            }
+        }
+        public void ShowMoney()
+        {
+            Console.WriteLine("当前余额：" + money);
+        }
+    }
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Backpack b1= new Backpack();
+            Backpack b2 = new Backpack(100);
+            b1.ShowBackPack();
+            b2.ShowBackPack();
+            b1.BuyStuff("sth1", 50);
+            b2.BuyStuff("sth2", 50);
+            b1.ShowBackPack();
+            b2.ShowBackPack();
+            b1.SoldStuff("sth1", 25);
+            b2.SoldStuff("sth2", 25);
+            b1.ShowBackPack();
+            b2.ShowBackPack();
+            b1.ShowMoney();
+            b2.ShowMoney();
+        }
+    }
+}