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How to get the repeating characters of a string in VB.NET

1 Answer

0 votes
Imports System
Public Module Module1
    public Function get_repeating_chars(s As String) As String
        Dim len As Integer = s.Length
        Dim tmp As String = ""
        For i As Integer = 0 To len - 1
            For j As Integer = i + 1 To len - 1
                If (s(i) = s(j)) Then
                    If (tmp.IndexOf(s(i).ToString(), StringComparison.CurrentCultureIgnoreCase) = -1) Then
                        tmp += s(i)
                        Exit For
                    End If
                End If
        return tmp
    End Function
    Public Sub Main()
        Dim s As String = "abcdeffghijgklmbbbbxzx"
        Dim tmp As String = get_repeating_chars(s)
    End Sub
End Module
' run:
' bfgx


answered Jan 11 by avibootz
edited Jan 11 by avibootz