Synchronization of old projects

Part1
2025-09-30 16:46:01 +08:00
parent 116b65164b
commit 4e1548abe2
167 changed files with 8668 additions and 43 deletions
@@ -0,0 +1,145 @@
+using System.Runtime.InteropServices;
+
+namespace Lesson6_封装_索引器练习
+{
+    class IntArray
+    {
+        private int[] array;
+        private int used, capacity;
+        public IntArray()
+        {
+            capacity = 5;
+            array = new int[capacity];
+            used = 0;
+        }
+        //增
+        public void Add(int value)
+        {
+            if (used < capacity)
+            {
+                array[used] = value;
+                used++;
+            }
+            else
+            {
+                capacity += 1;
+                int[] newArray = new int[capacity];
+                for (int i = 0; i < array.Length; i++)
+                {
+                    newArray[i] = array[i];
+                }
+                array = newArray;
+
+                array[used] = value;
+                used++;
+            }
+        }
+        //删
+        public void DelValue(int target)
+        {
+            for (int i = 0; i < used; i++) 
+            { 
+                if(target == array[i])
+                {
+                    DelIndex(i);
+                    return;
+                }
+            }
+            Console.WriteLine("没找到");
+        }
+        public void DelIndex(int target)
+        {
+            if (target > array.Length - 1)
+            {
+                Console.WriteLine("当前数组只有{0}长，溢出",used);
+            }
+            else
+            {
+                for (int i = target; i < used-1; i++)
+                {
+                    array[i] = array[i + 1];
+                }
+                for (int i = used - 1; i < used; i++)
+                {
+                    array[i] = 0;
+                }
+            }
+            --used;
+            
+        }
+        public int this[int index] 
+        { 
+            get 
+            {
+                if (index >= capacity)
+                {
+                    Console.WriteLine("已溢出,当前index:"+index+'\n'+"当前已用值:"+(used)+"当前容量:"+(capacity));
+                    return 0;
+                }
+                else 
+                {
+                    return array[index]; 
+                }
+                    
+            }
+            set 
+            {
+                Console.WriteLine(index);
+                array[index] = value;
+            } 
+        }
+    }
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Hello, World!");
+            IntArray a = new IntArray();
+            a.Add(1);
+            a.Add(2);
+            a.Add(3);
+            a.Add(4);
+            a.Add(5);
+            a.Add(6);
+            a.Add(7);
+            a.Add(8);
+            a.Add(9);
+            a.Add(10);
+            Console.WriteLine("dfdf" + a[0]);
+            Console.WriteLine("dfdf" + a[1]);
+            Console.WriteLine("dfdf" + a[2]);
+            Console.WriteLine("dfdf" + a[3]);
+            Console.WriteLine("dfdf" + a[4]);
+            Console.WriteLine("dfdf" + a[5]);
+            Console.WriteLine("dfdf" + a[6]);
+            Console.WriteLine("dfdf" + a[7]);
+            Console.WriteLine("dfdf" + a[8]);
+            Console.WriteLine("dfdf" + a[9]);
+            Console.WriteLine("越界测试" + a[10]);
+            Console.WriteLine();
+            a.DelIndex(3);
+            Console.WriteLine("dfdf" + a[0]);
+            Console.WriteLine("dfdf" + a[1]);
+            Console.WriteLine("dfdf" + a[2]);
+            Console.WriteLine("dfdf" + a[3]);
+            Console.WriteLine("dfdf" + a[4]);
+            Console.WriteLine("dfdf" + a[5]);
+            Console.WriteLine("dfdf" + a[6]);
+            Console.WriteLine("dfdf" + a[7]);
+            Console.WriteLine("dfdf" + a[8]);
+            Console.WriteLine("dfdf" + a[9]);
+            Console.WriteLine();
+            a.DelValue(7);
+            Console.WriteLine("dfdf" + a[0]);
+            Console.WriteLine("dfdf" + a[1]);
+            Console.WriteLine("dfdf" + a[2]);
+            Console.WriteLine("dfdf" + a[3]);
+            Console.WriteLine("dfdf" + a[4]);
+            Console.WriteLine("dfdf" + a[5]);
+            Console.WriteLine("dfdf" + a[6]);
+            Console.WriteLine("dfdf" + a[7]);
+            Console.WriteLine("dfdf" + a[8]);
+            Console.WriteLine("dfdf" + a[9]);
+        }
+    }
+}