Stack.CopyTo(Array, Int32) 方法

定义

从指定的数组索引开始, Stack 复制到现有的一维 Array

public:
 virtual void CopyTo(Array ^ array, int index);
public virtual void CopyTo(Array array, int index);
abstract member CopyTo : Array * int -> unit
override this.CopyTo : Array * int -> unit
Public Overridable Sub CopyTo (array As Array, index As Integer)

参数

array
Array

一维 Array 是从中 Stack复制的元素的目标。 必须 Array 具有从零开始的索引。

index
Int32

从零开始复制的索引 array

实现

例外

arraynull

index 小于零。

array 是多维。

-或-

Stack中的元素数大于目标indexarray末尾的可用空间。

Stack 的类型不能自动转换为目标 array的类型。

示例

以下示例演示如何将 a Stack 复制到一维数组中。

using System;
using System.Collections;
public class SamplesStack  {

   public static void Main()  {

      // Creates and initializes the source Stack.
      Stack mySourceQ = new Stack();
      mySourceQ.Push( "barn" );
      mySourceQ.Push( "the" );
      mySourceQ.Push( "in" );
      mySourceQ.Push( "cats" );
      mySourceQ.Push( "napping" );
      mySourceQ.Push( "three" );

      // Creates and initializes the one-dimensional target Array.
      Array myTargetArray=Array.CreateInstance( typeof(string), 15 );
      myTargetArray.SetValue( "The", 0 );
      myTargetArray.SetValue( "quick", 1 );
      myTargetArray.SetValue( "brown", 2 );
      myTargetArray.SetValue( "fox", 3 );
      myTargetArray.SetValue( "jumps", 4 );
      myTargetArray.SetValue( "over", 5 );
      myTargetArray.SetValue( "the", 6 );
      myTargetArray.SetValue( "lazy", 7 );
      myTargetArray.SetValue( "dog", 8 );

      // Displays the values of the target Array.
      Console.WriteLine( "The target Array contains the following (before and after copying):" );
      PrintValues( myTargetArray, ' ' );

      // Copies the entire source Stack to the target Array, starting at index 6.
      mySourceQ.CopyTo( myTargetArray, 6 );

      // Displays the values of the target Array.
      PrintValues( myTargetArray, ' ' );

      // Copies the entire source Stack to a new standard array.
      Object[] myStandardArray = mySourceQ.ToArray();

      // Displays the values of the new standard array.
      Console.WriteLine( "The new standard array contains the following:" );
      PrintValues( myStandardArray, ' ' );
   }

   public static void PrintValues( Array myArr, char mySeparator )  {
      foreach ( Object myObj in myArr )  {
         Console.Write( "{0}{1}", mySeparator, myObj );
      }
      Console.WriteLine();
   }
}


/*
This code produces the following output.

The target Array contains the following (before and after copying):
 The quick brown fox jumps over the lazy dog
 The quick brown fox jumps over three napping cats in the barn
The new standard array contains the following:
 three napping cats in the barn
*/
Imports System.Collections

Public Class SamplesStack    
    
    Public Shared Sub Main()
        
        ' Creates and initializes the source Stack.
        Dim mySourceQ As New Stack()
        mySourceQ.Push("barn")
        mySourceQ.Push("the")
        mySourceQ.Push("in")
        mySourceQ.Push("cats")
        mySourceQ.Push("napping")
        mySourceQ.Push("three")
        
        ' Creates and initializes the one-dimensional target Array.
        Dim myTargetArray As Array = Array.CreateInstance(GetType(String), 15)
        myTargetArray.SetValue("The", 0)
        myTargetArray.SetValue("quick", 1)
        myTargetArray.SetValue("brown", 2)
        myTargetArray.SetValue("fox", 3)
        myTargetArray.SetValue("jumps", 4)
        myTargetArray.SetValue("over", 5)
        myTargetArray.SetValue("the", 6)
        myTargetArray.SetValue("lazy", 7)
        myTargetArray.SetValue("dog", 8)
        
        ' Displays the values of the target Array.
        Console.WriteLine("The target Array contains the " & _
           "following (before and after copying):")
        PrintValues(myTargetArray, " "c)
        
        ' Copies the entire source Stack to the target Array, starting
        ' at index 6.
        mySourceQ.CopyTo(myTargetArray, 6)
        
        ' Displays the values of the target Array.
        PrintValues(myTargetArray, " "c)
        
        ' Copies the entire source Stack to a new standard array.
        Dim myStandardArray As Object() = mySourceQ.ToArray()
        
        ' Displays the values of the new standard array.
        Console.WriteLine("The new standard array contains the following:")
        PrintValues(myStandardArray, " "c)
    End Sub    
    
    Overloads Public Shared Sub PrintValues(myArr As Array, _
       mySeparator As Char)
       
        Dim myObj As Object
        For Each myObj In  myArr
            Console.Write("{0}{1}", mySeparator, myObj)
        Next myObj
        Console.WriteLine()
    End Sub

End Class


' This code produces the following output.
'
' The target Array contains the following (before and after copying):
'  The quick brown fox jumps over the lazy dog
'  The quick brown fox jumps over three napping cats in the barn
' The new standard array contains the following:
'  three napping cats in the barn

注解

这些元素按先出(LIFO)顺序复制到数组中,类似于连续调用 Pop返回的元素的顺序。

此方法是一个O(n)操作,其中 nCount

适用于

另请参阅