移除 C# 中 ArrayList 指定索引的元素
要移除 ArrayList 中指定索引处的元素,代码如下 −
示例
using System; using System.Collections; public class Demo { public static void Main(String[] args) { ArrayList list1 = new ArrayList(); list1.Add("A"); list1.Add("B"); list1.Add("C"); list1.Add("D"); list1.Add("E"); list1.Add("F"); list1.Add("G"); list1.Add("H"); list1.Add("I"); Console.WriteLine("Elements in ArrayList1..."); foreach (string res in list1) { Console.WriteLine(res); } ArrayList list2 = new ArrayList(); list2.Add("A"); list2.Add("B"); list2.Add("C"); list2.Add("D"); list2.Add("E"); list2.Add("F"); list2.Add("G"); list2.Add("H"); list2.Add("I"); Console.WriteLine("Elements in ArrayList2..."); foreach (string res in list2) { Console.WriteLine(res); } Console.WriteLine("Count of elements in ArrayList2 = " + list2.Count); list2.RemoveAt(5); Console.WriteLine("Count of elements in ArrayList2 (Updated) = " + list2.Count); } }
输出
将产生以下输出 −
Elements in ArrayList1... A B C D E F G H I Elements in ArrayList2... A B C D E F G H I Count of elements in ArrayList2 = 9 Count of elements in ArrayList2 (Updated) = 8
示例
让我们来看另一个示例 −
using System; using System.Collections; public class Demo { public static void Main(String[] args) { ArrayList list1 = new ArrayList(); list1.Add("Laptop"); list1.Add("Dektop"); list1.Add("Wearables"); list1.Add("Tablet"); list1.Add("Notebook"); list1.Add("Ultrabooks"); Console.WriteLine("Elements in ArrayList1..."); foreach (string res in list1) { Console.WriteLine(res); } Console.WriteLine("Count of elements in ArrayList = " + list1.Count); list1.RemoveAt(2); Console.WriteLine("Count of elements in ArrayList (Updated) = " + list1.Count); } }
输出
将产生以下输出 −
Elements in ArrayList1... Laptop Dektop Wearables Tablet Notebook Ultrabooks Count of elements in ArrayList = 6 Count of elements in ArrayList (Updated) = 5
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