Question

How to get array subset in VB.NET

Answer 1

Imports System
Imports System.Linq

Public Class Program
    Public Shared Sub Main(ByVal args As String())
        Dim arr As Integer() = New Integer(7) {3, 7, 9, 0, 4, 2, 1, 8}
        Dim startIndex As Integer = 2
        Dim length As Integer = 4
		
        Dim subset As Integer() = arr.Skip(startIndex).Take(length).ToArray()
        
		Console.WriteLine("Subset: " & String.Join(", ", subset))
    End Sub
End Class

 
' run:
'
' Subset: 9, 0, 4, 2
'

 

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Answer 2

Imports System

Public Class Program
    Public Shared Sub Main(ByVal args As String())
        Dim arr As Integer() = New Integer(7) {3, 7, 9, 0, 4, 2, 1, 8}
        Dim startIndex As Integer = 2
        Dim length As Integer = 4
		
        Dim subset As Integer() = New Integer(length - 1) {}
		Array.Copy(arr, startIndex, subset, 0, length)
        
		Console.WriteLine("Subset: " & String.Join(", ", subset))
    End Sub
End Class


 
' run:
'
' Subset: 9, 0, 4, 2
'

 

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