ArrayList.IndexOf ArrayList.IndexOf ArrayList.IndexOf ArrayList.IndexOf Method

정의

ArrayList 또는 그 일부에서 처음 나오는 값의 인덱스(0부터 시작)를 반환합니다.Returns the zero-based index of the first occurrence of a value in the ArrayList or in a portion of it.

오버로드

IndexOf(Object) IndexOf(Object) IndexOf(Object) IndexOf(Object)

지정한 Object를 검색하고, 전체 ArrayList 내에서 처음 나오는 0부터 시작하는 인덱스를 반환합니다.Searches for the specified Object and returns the zero-based index of the first occurrence within the entire ArrayList.

IndexOf(Object, Int32) IndexOf(Object, Int32) IndexOf(Object, Int32) IndexOf(Object, Int32)

지정된 Object를 검색하고, 지정된 인덱스부터 마지막 요소까지 포함되는 ArrayList의 요소 범위에서 처음 나오는 0부터 시작하는 인덱스를 반환합니다.Searches for the specified Object and returns the zero-based index of the first occurrence within the range of elements in the ArrayList that extends from the specified index to the last element.

IndexOf(Object, Int32, Int32) IndexOf(Object, Int32, Int32) IndexOf(Object, Int32, Int32) IndexOf(Object, Int32, Int32)

지정된 Object를 검색하고, 지정된 인덱스부터 시작하여 지정된 수의 요소를 포함하는 ArrayList의 요소 범위에서 처음 나오는 0부터 시작하는 인덱스를 반환합니다.Searches for the specified Object and returns the zero-based index of the first occurrence within the range of elements in the ArrayList that starts at the specified index and contains the specified number of elements.

IndexOf(Object) IndexOf(Object) IndexOf(Object) IndexOf(Object)

지정한 Object를 검색하고, 전체 ArrayList 내에서 처음 나오는 0부터 시작하는 인덱스를 반환합니다.Searches for the specified Object and returns the zero-based index of the first occurrence within the entire ArrayList.

public:
 virtual int IndexOf(System::Object ^ value);
public virtual int IndexOf (object value);
abstract member IndexOf : obj -> int
override this.IndexOf : obj -> int
Public Overridable Function IndexOf (value As Object) As Integer

매개 변수

value
Object Object Object Object

Object에서 찾을 ArrayList입니다.The Object to locate in the ArrayList. 값은 null이 될 수 있습니다.The value can be null.

반환

value가 있으면 전체 ArrayList에서 맨 처음 발견되는 값의 0부터 시작하는 인덱스이고, 그렇지 않으면 -1입니다.The zero-based index of the first occurrence of value within the entire ArrayList, if found; otherwise, -1.

구현

예제

다음 코드 예제에는 지정된 된 요소 중 첫 번째 요소의 인덱스를 확인 하는 방법을 보여 줍니다.The following code example shows how to determine the index of the first occurrence of a specified element.

using namespace System;
using namespace System::Collections;
void PrintIndexAndValues( IEnumerable^ myList );
int main()
{
   
   // Creates and initializes a new ArrayList with three elements of the same value.
   ArrayList^ myAL = gcnew ArrayList;
   myAL->Add( "the" );
   myAL->Add( "quick" );
   myAL->Add( "brown" );
   myAL->Add( "fox" );
   myAL->Add( "jumps" );
   myAL->Add( "over" );
   myAL->Add( "the" );
   myAL->Add( "lazy" );
   myAL->Add( "dog" );
   myAL->Add( "in" );
   myAL->Add( "the" );
   myAL->Add( "barn" );
   
   // Displays the values of the ArrayList.
   Console::WriteLine( "The ArrayList contains the following values:" );
   PrintIndexAndValues( myAL );
   
   // Search for the first occurrence of the duplicated value.
   String^ myString = "the";
   int myIndex = myAL->IndexOf( myString );
   Console::WriteLine( "The first occurrence of \"{0}\" is at index {1}.", myString, myIndex );
   
   // Search for the first occurrence of the duplicated value in the last section of the ArrayList.
   myIndex = myAL->IndexOf( myString, 4 );
   Console::WriteLine( "The first occurrence of \"{0}\" between index 4 and the end is at index {1}.", myString, myIndex );
   
   // Search for the first occurrence of the duplicated value in a section of the ArrayList.
   myIndex = myAL->IndexOf( myString, 6, 6 );
   Console::WriteLine( "The first occurrence of \"{0}\" between index 6 and index 11 is at index {1}.", myString, myIndex );
}

void PrintIndexAndValues( IEnumerable^ myList )
{
   int i = 0;
   IEnumerator^ myEnum = myList->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Object^ obj = safe_cast<Object^>(myEnum->Current);
      Console::WriteLine( "   [{0}]:    {1}", i++, obj );
   }

   Console::WriteLine();
}

/* 
 This code produces the following output.
 
 The ArrayList contains the following values:
    [0]:    the
    [1]:    quick
    [2]:    brown
    [3]:    fox
    [4]:    jumps
    [5]:    over
    [6]:    the
    [7]:    lazy
    [8]:    dog
    [9]:    in
    [10]:    the
    [11]:    barn

 The first occurrence of "the" is at index 0.
 The first occurrence of "the" between index 4 and the end is at index 6.
 The first occurrence of "the" between index 6 and index 11 is at index 6.
 */
using System;
using System.Collections;
public class SamplesArrayList
{

    public static void Main()  
    {
 
        // Creates and initializes a new ArrayList with three elements of the same value.
        ArrayList myAL = new ArrayList();
        myAL.Add( "the" );
        myAL.Add( "quick" );
        myAL.Add( "brown" );
        myAL.Add( "fox" );
        myAL.Add( "jumps" );
        myAL.Add( "over" );
        myAL.Add( "the" );
        myAL.Add( "lazy" );
        myAL.Add( "dog" );
        myAL.Add( "in" );
        myAL.Add( "the" );
        myAL.Add( "barn" );

        // Displays the values of the ArrayList.
        Console.WriteLine( "The ArrayList contains the following values:" );
        PrintIndexAndValues( myAL );

        // Search for the first occurrence of the duplicated value.
        String myString = "the";
        int myIndex = myAL.IndexOf( myString );
        Console.WriteLine( "The first occurrence of \"{0}\" is at index {1}.", myString, myIndex );

        // Search for the first occurrence of the duplicated value in the last section of the ArrayList.
        myIndex = myAL.IndexOf( myString, 4 );
        Console.WriteLine( "The first occurrence of \"{0}\" between index 4 and the end is at index {1}.", myString, myIndex );

        // Search for the first occurrence of the duplicated value in a section of the ArrayList.
        myIndex = myAL.IndexOf( myString, 6, 6 );
        Console.WriteLine( "The first occurrence of \"{0}\" between index 6 and index 11 is at index {1}.", myString, myIndex );

        // Search for the first occurrence of the duplicated value in a small section at the end of the ArrayList.
        myIndex = myAL.IndexOf( myString, 11 );
        Console.WriteLine( "The first occurrence of \"{0}\" between index 11 and the end is at index {1}.", myString, myIndex );
    }

    public static void PrintIndexAndValues(IEnumerable myList)
    {
        int i = 0;
        foreach (Object obj in myList)
            Console.WriteLine("   [{0}]:    {1}", i++, obj);
        Console.WriteLine();
    }

}
/* 
This code produces output similar to the following:
 
The ArrayList contains the following values:
   [0]:    the
   [1]:    quick
   [2]:    brown
   [3]:    fox
   [4]:    jumps
   [5]:    over
   [6]:    the
   [7]:    lazy
   [8]:    dog
   [9]:    in
   [10]:    the
   [11]:    barn

The first occurrence of "the" is at index 0.
The first occurrence of "the" between index 4 and the end is at index 6.
The first occurrence of "the" between index 6 and index 11 is at index 6.
The first occurrence of "the" between index 11 and the end is at index -1.
*/
Imports System.Collections

Public Class SamplesArrayList


    Public Shared Sub Main()

        ' Creates and initializes a new ArrayList with three elements of the same value.
        Dim myAL As New ArrayList()
        myAL.Add("the")
        myAL.Add("quick")
        myAL.Add("brown")
        myAL.Add("fox")
        myAL.Add("jumps")
        myAL.Add("over")
        myAL.Add("the")
        myAL.Add("lazy")
        myAL.Add("dog")
        myAL.Add("in")
        myAL.Add("the")
        myAL.Add("barn")

        ' Displays the values of the ArrayList.
        Console.WriteLine("The ArrayList contains the following values:")
        PrintIndexAndValues(myAL)

        ' Search for the first occurrence of the duplicated value.
        Dim myString As [String] = "the"
        Dim myIndex As Integer = myAL.IndexOf(myString)
        Console.WriteLine("The first occurrence of ""{0}"" is at index {1}.", myString, myIndex)

        ' Search for the first occurrence of the duplicated value in the last section of the ArrayList.
        myIndex = myAL.IndexOf(myString, 4)
        Console.WriteLine("The first occurrence of ""{0}"" between index 4 and the end is at index {1}.", myString, myIndex)

        ' Search for the first occurrence of the duplicated value in a section of the ArrayList.
        myIndex = myAL.IndexOf(myString, 6, 6)
        Console.WriteLine("The first occurrence of ""{0}"" between index 6 and index 11 is at index {1}.", myString, myIndex)

        ' Search for the first occurrence of the duplicated value in a small section at the end of the ArrayList.
        myIndex = myAL.IndexOf(myString, 11)
        Console.WriteLine("The first occurrence of ""{0}"" between index 11 and the end is at index {1}.", myString, myIndex)

    End Sub

    Public Shared Sub PrintIndexAndValues(ByVal myList As IEnumerable)
        Dim i As Integer
        Dim obj As [Object]
        For Each obj In myList
            Console.WriteLine("   [{0}]:    {1}", i, obj)
            i = i + 1
        Next obj
        Console.WriteLine()
    End Sub

End Class 'SamplesArrayList

' This code produces the following output.
'
' The ArrayList contains the following values:
' 	[0]:	the
' 	[1]:	quick
' 	[2]:	brown
' 	[3]:	fox
' 	[4]:	jumps
' 	[5]:	over
' 	[6]:	the
' 	[7]:	lazy
' 	[8]:	dog
' 	[9]:	in
' 	[10]:	the
' 	[11]:	barn
' 
' The first occurrence of "the" is at index 0.
' The first occurrence of "the" between index 4 and the end is at index 6.
' The first occurrence of "the" between index 6 and index 11 is at index 6.
' The first occurrence of "the" between index 11 and the end is at index -1.
' 

설명

ArrayList 검색은 앞으로 첫 번째 요소부터 마지막 요소입니다.The ArrayList is searched forward starting at the first element and ending at the last element.

이 메서드는; 선형 검색을 수행합니다. 따라서이 메서드는 O (n) 작업, 여기서 nCount합니다.This method performs a linear search; therefore, this method is an O(n) operation, where n is Count.

이 메서드를 호출 하 여 같은지 확인 Object.Equals합니다.This method determines equality by calling Object.Equals.

컬렉션의 개체를 사용 하 여이 메서드는.NET Framework 2.0 부터는 Equals 하 고 CompareTo 메서드를 item 항목이 있는지 여부를 확인 하려면.Starting with the .NET Framework 2.0, this method uses the collection's objects' Equals and CompareTo methods on item to determine whether item exists. .NET Framework의 이전 버전을 사용 하 여이 결정 했습니다 합니다 EqualsCompareTo 의 메서드는 item 컬렉션의 개체에 대 한 매개 변수입니다.In the earlier versions of the .NET Framework, this determination was made by using the Equals and CompareTo methods of the item parameter on the objects in the collection.

추가 정보

IndexOf(Object, Int32) IndexOf(Object, Int32) IndexOf(Object, Int32) IndexOf(Object, Int32)

지정된 Object를 검색하고, 지정된 인덱스부터 마지막 요소까지 포함되는 ArrayList의 요소 범위에서 처음 나오는 0부터 시작하는 인덱스를 반환합니다.Searches for the specified Object and returns the zero-based index of the first occurrence within the range of elements in the ArrayList that extends from the specified index to the last element.

public:
 virtual int IndexOf(System::Object ^ value, int startIndex);
public virtual int IndexOf (object value, int startIndex);
abstract member IndexOf : obj * int -> int
override this.IndexOf : obj * int -> int
Public Overridable Function IndexOf (value As Object, startIndex As Integer) As Integer

매개 변수

value
Object Object Object Object

Object에서 찾을 ArrayList입니다.The Object to locate in the ArrayList. 값은 null이 될 수 있습니다.The value can be null.

startIndex
Int32 Int32 Int32 Int32

검색의 0부터 시작하는 인덱스입니다.The zero-based starting index of the search. 0은 빈 목록에서 유효합니다.0 (zero) is valid in an empty list.

반환

startIndex부터 마지막 요소까지 포함하는 ArrayList의 요소 범위에 value가 있으면 처음으로 검색한 개체의 인덱스(0부터 시작)이고, 그렇지 않으면 -1입니다.The zero-based index of the first occurrence of value within the range of elements in the ArrayList that extends from startIndex to the last element, if found; otherwise, -1.

예외

startIndexArrayList의 유효한 인덱스 범위를 벗어납니다.startIndex is outside the range of valid indexes for the ArrayList.

예제

다음 코드 예제에는 지정된 된 요소 중 첫 번째 요소의 인덱스를 확인 하는 방법을 보여 줍니다.The following code example shows how to determine the index of the first occurrence of a specified element.

using namespace System;
using namespace System::Collections;
void PrintIndexAndValues( IEnumerable^ myList );
int main()
{
   
   // Creates and initializes a new ArrayList with three elements of the same value.
   ArrayList^ myAL = gcnew ArrayList;
   myAL->Add( "the" );
   myAL->Add( "quick" );
   myAL->Add( "brown" );
   myAL->Add( "fox" );
   myAL->Add( "jumps" );
   myAL->Add( "over" );
   myAL->Add( "the" );
   myAL->Add( "lazy" );
   myAL->Add( "dog" );
   myAL->Add( "in" );
   myAL->Add( "the" );
   myAL->Add( "barn" );
   
   // Displays the values of the ArrayList.
   Console::WriteLine( "The ArrayList contains the following values:" );
   PrintIndexAndValues( myAL );
   
   // Search for the first occurrence of the duplicated value.
   String^ myString = "the";
   int myIndex = myAL->IndexOf( myString );
   Console::WriteLine( "The first occurrence of \"{0}\" is at index {1}.", myString, myIndex );
   
   // Search for the first occurrence of the duplicated value in the last section of the ArrayList.
   myIndex = myAL->IndexOf( myString, 4 );
   Console::WriteLine( "The first occurrence of \"{0}\" between index 4 and the end is at index {1}.", myString, myIndex );
   
   // Search for the first occurrence of the duplicated value in a section of the ArrayList.
   myIndex = myAL->IndexOf( myString, 6, 6 );
   Console::WriteLine( "The first occurrence of \"{0}\" between index 6 and index 11 is at index {1}.", myString, myIndex );
}

void PrintIndexAndValues( IEnumerable^ myList )
{
   int i = 0;
   IEnumerator^ myEnum = myList->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Object^ obj = safe_cast<Object^>(myEnum->Current);
      Console::WriteLine( "   [{0}]:    {1}", i++, obj );
   }

   Console::WriteLine();
}

/* 
 This code produces the following output.
 
 The ArrayList contains the following values:
    [0]:    the
    [1]:    quick
    [2]:    brown
    [3]:    fox
    [4]:    jumps
    [5]:    over
    [6]:    the
    [7]:    lazy
    [8]:    dog
    [9]:    in
    [10]:    the
    [11]:    barn

 The first occurrence of "the" is at index 0.
 The first occurrence of "the" between index 4 and the end is at index 6.
 The first occurrence of "the" between index 6 and index 11 is at index 6.
 */
using System;
using System.Collections;
public class SamplesArrayList
{

    public static void Main()  
    {
 
        // Creates and initializes a new ArrayList with three elements of the same value.
        ArrayList myAL = new ArrayList();
        myAL.Add( "the" );
        myAL.Add( "quick" );
        myAL.Add( "brown" );
        myAL.Add( "fox" );
        myAL.Add( "jumps" );
        myAL.Add( "over" );
        myAL.Add( "the" );
        myAL.Add( "lazy" );
        myAL.Add( "dog" );
        myAL.Add( "in" );
        myAL.Add( "the" );
        myAL.Add( "barn" );

        // Displays the values of the ArrayList.
        Console.WriteLine( "The ArrayList contains the following values:" );
        PrintIndexAndValues( myAL );

        // Search for the first occurrence of the duplicated value.
        String myString = "the";
        int myIndex = myAL.IndexOf( myString );
        Console.WriteLine( "The first occurrence of \"{0}\" is at index {1}.", myString, myIndex );

        // Search for the first occurrence of the duplicated value in the last section of the ArrayList.
        myIndex = myAL.IndexOf( myString, 4 );
        Console.WriteLine( "The first occurrence of \"{0}\" between index 4 and the end is at index {1}.", myString, myIndex );

        // Search for the first occurrence of the duplicated value in a section of the ArrayList.
        myIndex = myAL.IndexOf( myString, 6, 6 );
        Console.WriteLine( "The first occurrence of \"{0}\" between index 6 and index 11 is at index {1}.", myString, myIndex );

        // Search for the first occurrence of the duplicated value in a small section at the end of the ArrayList.
        myIndex = myAL.IndexOf( myString, 11 );
        Console.WriteLine( "The first occurrence of \"{0}\" between index 11 and the end is at index {1}.", myString, myIndex );
    }

    public static void PrintIndexAndValues(IEnumerable myList)
    {
        int i = 0;
        foreach (Object obj in myList)
            Console.WriteLine("   [{0}]:    {1}", i++, obj);
        Console.WriteLine();
    }

}
/* 
This code produces output similar to the following:
 
The ArrayList contains the following values:
   [0]:    the
   [1]:    quick
   [2]:    brown
   [3]:    fox
   [4]:    jumps
   [5]:    over
   [6]:    the
   [7]:    lazy
   [8]:    dog
   [9]:    in
   [10]:    the
   [11]:    barn

The first occurrence of "the" is at index 0.
The first occurrence of "the" between index 4 and the end is at index 6.
The first occurrence of "the" between index 6 and index 11 is at index 6.
The first occurrence of "the" between index 11 and the end is at index -1.
*/
Imports System.Collections

Public Class SamplesArrayList


    Public Shared Sub Main()

        ' Creates and initializes a new ArrayList with three elements of the same value.
        Dim myAL As New ArrayList()
        myAL.Add("the")
        myAL.Add("quick")
        myAL.Add("brown")
        myAL.Add("fox")
        myAL.Add("jumps")
        myAL.Add("over")
        myAL.Add("the")
        myAL.Add("lazy")
        myAL.Add("dog")
        myAL.Add("in")
        myAL.Add("the")
        myAL.Add("barn")

        ' Displays the values of the ArrayList.
        Console.WriteLine("The ArrayList contains the following values:")
        PrintIndexAndValues(myAL)

        ' Search for the first occurrence of the duplicated value.
        Dim myString As [String] = "the"
        Dim myIndex As Integer = myAL.IndexOf(myString)
        Console.WriteLine("The first occurrence of ""{0}"" is at index {1}.", myString, myIndex)

        ' Search for the first occurrence of the duplicated value in the last section of the ArrayList.
        myIndex = myAL.IndexOf(myString, 4)
        Console.WriteLine("The first occurrence of ""{0}"" between index 4 and the end is at index {1}.", myString, myIndex)

        ' Search for the first occurrence of the duplicated value in a section of the ArrayList.
        myIndex = myAL.IndexOf(myString, 6, 6)
        Console.WriteLine("The first occurrence of ""{0}"" between index 6 and index 11 is at index {1}.", myString, myIndex)

        ' Search for the first occurrence of the duplicated value in a small section at the end of the ArrayList.
        myIndex = myAL.IndexOf(myString, 11)
        Console.WriteLine("The first occurrence of ""{0}"" between index 11 and the end is at index {1}.", myString, myIndex)

    End Sub

    Public Shared Sub PrintIndexAndValues(ByVal myList As IEnumerable)
        Dim i As Integer
        Dim obj As [Object]
        For Each obj In myList
            Console.WriteLine("   [{0}]:    {1}", i, obj)
            i = i + 1
        Next obj
        Console.WriteLine()
    End Sub

End Class 'SamplesArrayList

' This code produces the following output.
'
' The ArrayList contains the following values:
' 	[0]:	the
' 	[1]:	quick
' 	[2]:	brown
' 	[3]:	fox
' 	[4]:	jumps
' 	[5]:	over
' 	[6]:	the
' 	[7]:	lazy
' 	[8]:	dog
' 	[9]:	in
' 	[10]:	the
' 	[11]:	barn
' 
' The first occurrence of "the" is at index 0.
' The first occurrence of "the" between index 4 and the end is at index 6.
' The first occurrence of "the" between index 6 and index 11 is at index 6.
' The first occurrence of "the" between index 11 and the end is at index -1.
' 

설명

합니다 ArrayList 부터 앞으로 검색 됩니다 startIndex 및 마지막 요소에 종료 합니다.The ArrayList is searched forward starting at startIndex and ending at the last element.

이 메서드는; 선형 검색을 수행합니다. 따라서이 메서드는 O (n) 작업을 여기서 n 의 요소입니다 startIndex 의 끝에는 ArrayList합니다.This method performs a linear search; therefore, this method is an O(n) operation, where n is the number of elements from startIndex to the end of the ArrayList.

이 메서드를 호출 하 여 같은지 확인 Object.Equals합니다.This method determines equality by calling Object.Equals.

컬렉션의 개체를 사용 하 여이 메서드는.NET Framework 2.0 부터는 Equals 하 고 CompareTo 메서드를 item 항목이 있는지 여부를 확인 하려면.Starting with the .NET Framework 2.0, this method uses the collection's objects' Equals and CompareTo methods on item to determine whether item exists. .NET Framework의 이전 버전을 사용 하 여이 결정 했습니다 합니다 EqualsCompareTo 의 메서드는 item 컬렉션의 개체에 대 한 매개 변수입니다.In the earlier versions of the .NET Framework, this determination was made by using the Equals and CompareTo methods of the item parameter on the objects in the collection.

추가 정보

IndexOf(Object, Int32, Int32) IndexOf(Object, Int32, Int32) IndexOf(Object, Int32, Int32) IndexOf(Object, Int32, Int32)

지정된 Object를 검색하고, 지정된 인덱스부터 시작하여 지정된 수의 요소를 포함하는 ArrayList의 요소 범위에서 처음 나오는 0부터 시작하는 인덱스를 반환합니다.Searches for the specified Object and returns the zero-based index of the first occurrence within the range of elements in the ArrayList that starts at the specified index and contains the specified number of elements.

public:
 virtual int IndexOf(System::Object ^ value, int startIndex, int count);
public virtual int IndexOf (object value, int startIndex, int count);
abstract member IndexOf : obj * int * int -> int
override this.IndexOf : obj * int * int -> int
Public Overridable Function IndexOf (value As Object, startIndex As Integer, count As Integer) As Integer

매개 변수

value
Object Object Object Object

Object에서 찾을 ArrayList입니다.The Object to locate in the ArrayList. 값은 null이 될 수 있습니다.The value can be null.

startIndex
Int32 Int32 Int32 Int32

검색의 0부터 시작하는 인덱스입니다.The zero-based starting index of the search. 0은 빈 목록에서 유효합니다.0 (zero) is valid in an empty list.

count
Int32 Int32 Int32 Int32

검색할 섹션에 있는 요소 수입니다.The number of elements in the section to search.

반환

startIndex에서 시작하여 count개의 요소를 포함하는 ArrayList의 요소 범위에 value가 있으면 처음으로 검색한 개체의 인덱스(0부터 시작)이고, 그렇지 않으면 -1입니다.The zero-based index of the first occurrence of value within the range of elements in the ArrayList that starts at startIndex and contains count number of elements, if found; otherwise, -1.

예외

startIndexArrayList의 유효한 인덱스 범위를 벗어납니다.startIndex is outside the range of valid indexes for the ArrayList.

또는-or- count가 0보다 작은 경우count is less than zero.

또는-or- startIndexcountArrayList의 올바른 섹션을 지정하지 않습니다.startIndex and count do not specify a valid section in the ArrayList.

예제

다음 코드 예제에는 지정된 된 요소 중 첫 번째 요소의 인덱스를 확인 하는 방법을 보여 줍니다.The following code example shows how to determine the index of the first occurrence of a specified element.

using namespace System;
using namespace System::Collections;
void PrintIndexAndValues( IEnumerable^ myList );
int main()
{
   
   // Creates and initializes a new ArrayList with three elements of the same value.
   ArrayList^ myAL = gcnew ArrayList;
   myAL->Add( "the" );
   myAL->Add( "quick" );
   myAL->Add( "brown" );
   myAL->Add( "fox" );
   myAL->Add( "jumps" );
   myAL->Add( "over" );
   myAL->Add( "the" );
   myAL->Add( "lazy" );
   myAL->Add( "dog" );
   myAL->Add( "in" );
   myAL->Add( "the" );
   myAL->Add( "barn" );
   
   // Displays the values of the ArrayList.
   Console::WriteLine( "The ArrayList contains the following values:" );
   PrintIndexAndValues( myAL );
   
   // Search for the first occurrence of the duplicated value.
   String^ myString = "the";
   int myIndex = myAL->IndexOf( myString );
   Console::WriteLine( "The first occurrence of \"{0}\" is at index {1}.", myString, myIndex );
   
   // Search for the first occurrence of the duplicated value in the last section of the ArrayList.
   myIndex = myAL->IndexOf( myString, 4 );
   Console::WriteLine( "The first occurrence of \"{0}\" between index 4 and the end is at index {1}.", myString, myIndex );
   
   // Search for the first occurrence of the duplicated value in a section of the ArrayList.
   myIndex = myAL->IndexOf( myString, 6, 6 );
   Console::WriteLine( "The first occurrence of \"{0}\" between index 6 and index 11 is at index {1}.", myString, myIndex );
}

void PrintIndexAndValues( IEnumerable^ myList )
{
   int i = 0;
   IEnumerator^ myEnum = myList->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Object^ obj = safe_cast<Object^>(myEnum->Current);
      Console::WriteLine( "   [{0}]:    {1}", i++, obj );
   }

   Console::WriteLine();
}

/* 
 This code produces the following output.
 
 The ArrayList contains the following values:
    [0]:    the
    [1]:    quick
    [2]:    brown
    [3]:    fox
    [4]:    jumps
    [5]:    over
    [6]:    the
    [7]:    lazy
    [8]:    dog
    [9]:    in
    [10]:    the
    [11]:    barn

 The first occurrence of "the" is at index 0.
 The first occurrence of "the" between index 4 and the end is at index 6.
 The first occurrence of "the" between index 6 and index 11 is at index 6.
 */
using System;
using System.Collections;
public class SamplesArrayList
{

    public static void Main()  
    {
 
        // Creates and initializes a new ArrayList with three elements of the same value.
        ArrayList myAL = new ArrayList();
        myAL.Add( "the" );
        myAL.Add( "quick" );
        myAL.Add( "brown" );
        myAL.Add( "fox" );
        myAL.Add( "jumps" );
        myAL.Add( "over" );
        myAL.Add( "the" );
        myAL.Add( "lazy" );
        myAL.Add( "dog" );
        myAL.Add( "in" );
        myAL.Add( "the" );
        myAL.Add( "barn" );

        // Displays the values of the ArrayList.
        Console.WriteLine( "The ArrayList contains the following values:" );
        PrintIndexAndValues( myAL );

        // Search for the first occurrence of the duplicated value.
        String myString = "the";
        int myIndex = myAL.IndexOf( myString );
        Console.WriteLine( "The first occurrence of \"{0}\" is at index {1}.", myString, myIndex );

        // Search for the first occurrence of the duplicated value in the last section of the ArrayList.
        myIndex = myAL.IndexOf( myString, 4 );
        Console.WriteLine( "The first occurrence of \"{0}\" between index 4 and the end is at index {1}.", myString, myIndex );

        // Search for the first occurrence of the duplicated value in a section of the ArrayList.
        myIndex = myAL.IndexOf( myString, 6, 6 );
        Console.WriteLine( "The first occurrence of \"{0}\" between index 6 and index 11 is at index {1}.", myString, myIndex );

        // Search for the first occurrence of the duplicated value in a small section at the end of the ArrayList.
        myIndex = myAL.IndexOf( myString, 11 );
        Console.WriteLine( "The first occurrence of \"{0}\" between index 11 and the end is at index {1}.", myString, myIndex );
    }

    public static void PrintIndexAndValues(IEnumerable myList)
    {
        int i = 0;
        foreach (Object obj in myList)
            Console.WriteLine("   [{0}]:    {1}", i++, obj);
        Console.WriteLine();
    }

}
/* 
This code produces output similar to the following:
 
The ArrayList contains the following values:
   [0]:    the
   [1]:    quick
   [2]:    brown
   [3]:    fox
   [4]:    jumps
   [5]:    over
   [6]:    the
   [7]:    lazy
   [8]:    dog
   [9]:    in
   [10]:    the
   [11]:    barn

The first occurrence of "the" is at index 0.
The first occurrence of "the" between index 4 and the end is at index 6.
The first occurrence of "the" between index 6 and index 11 is at index 6.
The first occurrence of "the" between index 11 and the end is at index -1.
*/
Imports System.Collections

Public Class SamplesArrayList


    Public Shared Sub Main()

        ' Creates and initializes a new ArrayList with three elements of the same value.
        Dim myAL As New ArrayList()
        myAL.Add("the")
        myAL.Add("quick")
        myAL.Add("brown")
        myAL.Add("fox")
        myAL.Add("jumps")
        myAL.Add("over")
        myAL.Add("the")
        myAL.Add("lazy")
        myAL.Add("dog")
        myAL.Add("in")
        myAL.Add("the")
        myAL.Add("barn")

        ' Displays the values of the ArrayList.
        Console.WriteLine("The ArrayList contains the following values:")
        PrintIndexAndValues(myAL)

        ' Search for the first occurrence of the duplicated value.
        Dim myString As [String] = "the"
        Dim myIndex As Integer = myAL.IndexOf(myString)
        Console.WriteLine("The first occurrence of ""{0}"" is at index {1}.", myString, myIndex)

        ' Search for the first occurrence of the duplicated value in the last section of the ArrayList.
        myIndex = myAL.IndexOf(myString, 4)
        Console.WriteLine("The first occurrence of ""{0}"" between index 4 and the end is at index {1}.", myString, myIndex)

        ' Search for the first occurrence of the duplicated value in a section of the ArrayList.
        myIndex = myAL.IndexOf(myString, 6, 6)
        Console.WriteLine("The first occurrence of ""{0}"" between index 6 and index 11 is at index {1}.", myString, myIndex)

        ' Search for the first occurrence of the duplicated value in a small section at the end of the ArrayList.
        myIndex = myAL.IndexOf(myString, 11)
        Console.WriteLine("The first occurrence of ""{0}"" between index 11 and the end is at index {1}.", myString, myIndex)

    End Sub

    Public Shared Sub PrintIndexAndValues(ByVal myList As IEnumerable)
        Dim i As Integer
        Dim obj As [Object]
        For Each obj In myList
            Console.WriteLine("   [{0}]:    {1}", i, obj)
            i = i + 1
        Next obj
        Console.WriteLine()
    End Sub

End Class 'SamplesArrayList

' This code produces the following output.
'
' The ArrayList contains the following values:
' 	[0]:	the
' 	[1]:	quick
' 	[2]:	brown
' 	[3]:	fox
' 	[4]:	jumps
' 	[5]:	over
' 	[6]:	the
' 	[7]:	lazy
' 	[8]:	dog
' 	[9]:	in
' 	[10]:	the
' 	[11]:	barn
' 
' The first occurrence of "the" is at index 0.
' The first occurrence of "the" between index 4 and the end is at index 6.
' The first occurrence of "the" between index 6 and index 11 is at index 6.
' The first occurrence of "the" between index 11 and the end is at index -1.
' 

설명

ArrayList 부터 앞으로 검색 됩니다 startIndex 에서 끝나는 startIndex plus count 에서 1을 뺀 경우 count 0 보다 큽니다.The ArrayList is searched forward starting at startIndex and ending at startIndex plus count minus 1, if count is greater than 0.

이 메서드는; 선형 검색을 수행합니다. 따라서이 메서드는 O (n) 작업, 여기서 ncount합니다.This method performs a linear search; therefore, this method is an O(n) operation, where n is count.

이 메서드를 호출 하 여 같은지 확인 Object.Equals합니다.This method determines equality by calling Object.Equals.

컬렉션의 개체를 사용 하 여이 메서드는.NET Framework 2.0 부터는 Equals 하 고 CompareTo 메서드를 item 항목이 있는지 여부를 확인 하려면.Starting with the .NET Framework 2.0, this method uses the collection's objects' Equals and CompareTo methods on item to determine whether item exists. .NET Framework의 이전 버전을 사용 하 여이 결정 했습니다 합니다 EqualsCompareTo 의 메서드는 item 컬렉션의 개체에 대 한 매개 변수입니다.In the earlier versions of the .NET Framework, this determination was made by using the Equals and CompareTo methods of the item parameter on the objects in the collection.

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