在 C# 中檢查 Stack 是否包含一個元素


若要檢查 Stack 是否有元素,可使用 C# Contains() 方法。以下為相應程式碼 −

示例

 即時演示

using System;
using System.Collections.Generic;
public class Demo {
   public static void Main(){
      Stack<int> stack = new Stack<int>();
      stack.Push(100);
      stack.Push(150);
      stack.Push(175);
      stack.Push(200);
      stack.Push(225);
      stack.Push(250);
      stack.Push(300);
      stack.Push(400);
      stack.Push(450);
      stack.Push(500);
      Console.WriteLine("Elements in the Stack:");
      foreach(var val in stack){
         Console.WriteLine(val);
      }
      Console.WriteLine("Count of elements in the Stack = "+stack.Count);
      Console.WriteLine("Does Stack has the element 400?= "+stack.Contains(400));
   }
}

輸出

將生成以下輸出 −

Elements in the Stack:
500
450
400
300
250
225
200
175
150
100
Count of elements in the Stack = 10 Does Stack has the element40400?= True

示例

我們來看看另一個示例 −

 即時演示

using System;
using System.Collections.Generic;
public class Demo {
   public static void Main(){
      Stack<string> stack = new Stack<string>();
      stack.Push("Steve");
      stack.Push("Gary");
      stack.Push("Stephen");
      stack.Push("Nathan");
      stack.Push("Katie");
      stack.Push("Andy");
      stack.Push("David");
      stack.Push("Amy");
      Console.WriteLine("Elements in the Stack:");
      foreach(var val in stack){
         Console.WriteLine(val);
      }
      Console.WriteLine("Count of elements in the Stack = "+stack.Count);
      Console.WriteLine("Does Stack has the element 400?= "+stack.Contains("Michael"));
   }
}

輸出

將生成以下輸出 −

Elements in the Stack:
Amy
David
Andy
Katie
Nathan
Stephen
Gary
Steve
Count of elements in the Stack = 8 Does Stack has the element 400?= False

更新日期:2019-12-04

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