Question

How to check if a string is in alphabetical order in VB.NET

Answer 1

Imports System

Public Class Program
    Public Shared Function isInAlphabeticalOrder(ByVal s As String) As Boolean
        For i As Integer = 0 To s.Length - 1 - 1
            If s(i) >= s(i + 1) Then
                Return False
            End If
        Next

        Return True
    End Function

	Public Shared Sub Main()
        Dim s1 As String = "java c c++"
        Console.WriteLine(isInAlphabeticalOrder(s1))
	
        Dim s2 As String = "abcxyz"
        Console.WriteLine(isInAlphabeticalOrder(s2))
    End Sub
End Class



' run:
'
' False
' True
'

 

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