Imports System
Public Class Program
Public Shared Sub make_unique(ByVal arr As Integer())
Dim previous As Integer = arr(0)
For i As Integer = 1 To arr.Length - 1
If arr(i) <= previous Then
arr(i) = previous
arr(i) += 1
End If
previous = arr(i)
Next
End Sub
Public Shared Sub Main()
Dim arr As Integer() = {1, 1, 2, 2, 3, 3, 7, 8, 8, 8, 12, 15, 33, 33, 33}
make_unique(arr)
Console.Write(String.Join(", ", arr))
End Sub
End Class
' run:
'
' 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 33, 34, 35
'