Question

How to flatten 2D array into one dimensional array using Linq in VB.NET

Answer 1

Imports System
Imports System.Linq

Public Class Program
	Public Shared Sub Main()
    	Dim array2d As Integer()() = New Integer(3)(){}
 
        array2d(0) = New Integer() {4, 6}
        array2d(1) = New Integer() {8, 39, 0}
        array2d(2) = New Integer() {17, 15}
        array2d(3) = New Integer() {3, 7, 1, 2}
		
        Dim arr = array2d.SelectMany(Function(x) x).ToArray()
			
        Console.WriteLine(String.Join(", ", arr))
    End Sub
End Class
	
	
	
' run:
'
' 4, 6, 8, 39, 0, 17, 15, 3, 7, 1, 2
'

 

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