要检查队列中是否有元素,代码如下-
using System; using System.Collections.Generic; public class Demo { public static void Main(){ Queue<string> queue = new Queue<string>(); queue.Enqueue("Electronics"); queue.Enqueue("Accessories"); queue.Enqueue("Toys"); queue.Enqueue("Books"); queue.Enqueue("Furniture"); queue.Enqueue("Clothing"); queue.Enqueue("Footwear"); queue.Enqueue("Cookware"); queue.Enqueue("Pet Supplies"); Console.WriteLine("Elements in the Queue..."); foreach(var element in queue){ Console.WriteLine(element); } Console.WriteLine("Do the queue has the element Books? = "+queue.Contains("Books")); } }
输出结果
这将产生以下输出-
Elements in the Queue... Electronics Accessories Toys Books Furniture Clothing Footwear Cookware Pet Supplies Do the queue has the element Books? = True
让我们看另一个例子-
using System; using System.Collections.Generic; public class Demo { public static void Main(){ Queue<int> queue = new Queue<int>(); queue.Enqueue(100); queue.Enqueue(200); queue.Enqueue(300); queue.Enqueue(400); queue.Enqueue(500); queue.Enqueue(600); queue.Enqueue(700); queue.Enqueue(800); queue.Enqueue(1000); Console.WriteLine("Elements in the Queue..."); foreach(var element in queue){ Console.WriteLine(element); } Console.WriteLine("Do the queue has the element 50? = "+queue.Contains(50)); } }
输出结果
这将产生以下输出-
Elements in the Queue... 100 200 300 400 500 600 700 800 1000 Do the queue has the element 50? = False