arrangement

Question

How to generate all the possible arrangements of 123 (for eg:..123132231231312321.) using VB.net i should get an generalised solution suitable for n numbers

Alan · Answer

This code will generate and display all possible arrangements of the numbers 123: Imports System Imports System.Collections.Generic Module Permutations Sub Main() Dim perms As New List(Of Integer()) For i As Integer = 1 To 3 For j As Integer = 1 To 3 If i = j Then Continue For For k As Integer = 1 To 3 If k i AndAlso k j Then perms.Add(New Integer(2){ijk}) End If Next k Next j Next i Console.WriteLine(All possible arrangements of {123} are:) Console.WriteLine() For Each perm As Integer() in perms Console.Write({) For i As Integer = 0 To 2 Console.Write(perm(i)) If i Next i Console.WriteLine(}) Next perm End Sub End Module However as this sounds like homework you'll have to do the general case of 'n' numbers yourself to get some benefit from this. To avoid having 'n' For statements I'd look for a recursive solution.