C# Stack.GetEnumerator()用法及代码示例

C# 中的 Stack.GetEnumerator() 方法用于返回堆栈的 IEnumerator。

用法

语法如下 -

public virtual System.Collections.IEnumerator GetEnumerator ();

示例

现在让我们看一个例子 -

using System;
using System.Collections;
public class Demo {
   public static void Main(){
      Stack stack1 = new Stack();
      stack1.Push(150);
      stack1.Push(300);
      stack1.Push(500);
      stack1.Push(750);
      stack1.Push(1000);
      Console.WriteLine("Stack1 elements...");
      foreach(int val in stack1){
         Console.WriteLine(val);
      }
      Stack stack2 = new Stack();
      stack2.Push(350);
      stack2.Push(400);
      stack2.Push(500);
      stack2.Push(850);
      stack2.Push(900);
      IEnumerator demoEnum = stack2.GetEnumerator();
      Console.WriteLine("Stack2 elements...");
      while (demoEnum.MoveNext()) {
         Console.WriteLine(demoEnum.Current);
      }
      Console.WriteLine("\nAre both the stacks equal? = "+stack1.Equals(stack2));
   }
}

输出

这将产生以下输出 -

Stack1 elements...
1000
750
500
300
150
Stack2 elements...
900
850
500
400
350
Are both the stacks equal? = False

示例

现在让我们看另一个例子 -

using System;
using System.Collections;
public class Demo {
   public static void Main(){
      Stack stack = new Stack();
      stack.Push("Inspiron");
      stack.Push("Alienware");
      stack.Push("Projectors");
      stack.Push("Monitors");
      stack.Push("XPS");
      stack.Push("Laptop");
      stack.Push("Notebook");
      Console.WriteLine("Stack elements...");
      foreach(string val in stack){
         Console.WriteLine(val);
      }
      Console.WriteLine("Count of elements = "+stack.Count);
      Console.WriteLine("Element Speakers is the stack? = "+stack.Contains("Speakers"));
      stack.Push("Headphone");
      stack.Push("Keyboard");
      stack.Push("Earphone");
      Console.WriteLine("\nStack elements...updated");
      foreach(string val in stack){
         Console.WriteLine(val);
      }
      Console.WriteLine("Count of elements (updated) = "+stack.Count);
      Console.WriteLine("\nElement Alienware is the stack? = "+stack.Contains("Alienware"));
      Stack stack2 = (Stack)stack.Clone();
      Console.WriteLine("\nStack elements...cloned");
      IEnumerator demoEnum = stack2.GetEnumerator();
      while (demoEnum.MoveNext()) {
         Console.WriteLine(demoEnum.Current);
      }
      Console.WriteLine("Count of elements (updated) = "+stack.Count);
   }
}

输出

这将产生以下输出 -

Stack elements...
Notebook
Laptop
XPS
Monitors
Projectors
Alienware
Inspiron
Count of elements = 7
Element Speakers is the stack? = False
Stack elements...updated
Earphone
Keyboard
Headphone
Notebook
Laptop
XPS
Monitors
Projectors
Alienware
Inspiron
Count of elements (updated) = 10
Element Alienware is the stack? = True
Stack elements...cloned
Earphone
Keyboard
Headphone
Notebook
Laptop
XPS
Monitors
Projectors
Alienware
Inspiron
Count of elements (updated) = 10