Imports System
Public Class Program
Public Shared Sub Main()
Dim arr As Integer() = New Integer() {3, 8, 1, 9, 4, 10, 7, 13, 2, 6}
Dim size As Integer = arr.Length
Dim N As Integer = 4
Dim just_greater As Integer = Integer.MaxValue
Dim just_smaller As Integer = Integer.MinValue
For i As Integer = 0 To size - 1
If arr(i) > N AndAlso arr(i) < just_greater Then
just_greater = arr(i)
End If
If arr(i) < N AndAlso just_smaller < arr(i) Then
just_smaller = arr(i)
End If
Next
Console.WriteLine("just_smaller: " & just_smaller)
Console.WriteLine("N: " & N)
Console.WriteLine("just_greater: " & just_greater)
End Sub
End Class
' run:
'
' just_smaller: 3
' N: 4
' just_greater: 6
'
