Question

How to swap two arrays without using temporary variable in VB.NET

Answer 1

Imports System
Imports Microsoft.VisualBasic

Public Class Program
	Public Shared Sub Main()
        Dim first As Integer() = {1, 2, 3, 4, 5}, second As Integer() = {99, 88, 77, 66, 55}
        Dim size As Integer = first.Length

        For i As Integer = 0 To size - 1
            first(i) = first(i) + second(i)
            second(i) = first(i) - second(i)
            first(i) = first(i) - second(i)
        Next

        Console.WriteLine("First")

        For i As Integer = 0 To size - 1
            Console.Write(first(i) & " ")
        Next

		Console.WriteLine(vbNewLine & "Second")

        For i As Integer = 0 To size - 1
            Console.Write(second(i) & " ")
        Next
    End Sub
End Class





' run:
'
' First
' 99 88 77 66 55 
' Second
' 1 2 3 4 5
'

 

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