Question

How to convert an array of digits to a number in VB.NET

Answer 1

Imports System
 
Public Class Program
    Public Shared Sub Main()
        Dim n As Integer = 0
        Dim arr As Integer() = {4, 6, 3, 9, 1, 2}
 
        For Each num As Integer In arr
            n = n * 10 + num
        Next
 
        Console.WriteLine("n = " & n)
    End Sub
End Class
     
         
         
 
' run:
'
' n = 463912
'

 

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Answer 2

Imports System
 
Public Class Program
    Public Shared Sub Main()
        Dim arr() As Integer = New Integer() {4, 6, 3, 9, 1, 2}
        Dim n As Integer = 0
 
        For i As Integer = 0 To arr.Length - 1
            n = n + arr(i) * Convert.ToInt32(Math.Pow(10, arr.Length - i - 1))
        Next
 
        Console.WriteLine("n = {0}", n)
    End Sub
End Class
     
         
         
 
' run:
'
' n = 463912
'

 

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Answer 3

Imports System
Imports System.Linq

Public Class Program
    Public Shared Sub Main()
        Dim arr As Integer() = {4, 6, 3, 9, 1, 2}
		
        Dim n As Integer = arr.Aggregate(Function(result, x) result * 10 + x)
			
        Console.WriteLine("n = " & n)
    End Sub
End Class
         
         
 
' run:
'
' n = 463912
'

 

70+ SQL courses for beginners and professionals