Question

如何组合或加入最近的项目类似于例如

 Dim _lstOfFontsList As New List(Of String)
  From {"Arial", "Arial", "Arial", "GEORGIA", "Arial", 
        "Arial", "GEORGIA", "GEORGIA",
        "ABOlD", "ABOlD", "Arial"}

_lstOfFontsList本身有11个值，这里0,1,2个项目是相似的，5,6和7,8和9,10个项目在这里类似我想要对类似的项目进行分组以便尝试使用groupby功能如下所示

Dim Cntdd = _lstOfFontsList.GroupBy(Function(S) S).ToDictionary
                 (Function(a) a.Key, Function(a) a.Count)

但输出如下

   [Arial, 6]
   [GEORGIA, 3]
   [ABOlD, 2]

但预期输出

Arial = 3
Georgia =1
Arial=2
Georgia=2 
Abold=2
Arial=1

如何组合或分组或加入最接近（下一个）字符串列表中的类似项目

更新：我试图循环条件以获得上面的值，但预期的结果将不会来到这里是代码

        Dim _fntCnt% = 0
        Dim _finalItms As New List(Of String)
        Dim _finalFntName$ = ""
        Dim LASTITEMS As New List(Of String)

        For i = 0 To _lstOfFontsList.Count - 1
            If i = 0 Then
                _fntCnt += 1
                _finalItms.Add(_lstOfFontsList(i) & "->" & _fntCnt)
                _finalFntName$ = _lstOfFontsList(i)
            End If

            Trace.WriteLine(i)
            If i <> _lstOfFontsList.Count - 1 Then
                If _lstOfFontsList(i) = _lstOfFontsList(i + 1) Then
                    _fntCnt += 1
                    _finalItms.Add(_lstOfFontsList(i) & "->" & _fntCnt)
                Else
                    For Each _itmm In _finalItms
                        LASTITEMS.Add(_itmm & " " & _finalFntName.Count)
                    Next
                    _finalItms.Clear()
                End If
            End If
        Next

请任何人帮忙

Answer 1

我确信必须有更简单的解决方案，但这也表明了这个想法背后的工作。正如JM所说，你需要一个循环并检查项目是否还有更多。在这种情况下，您不能使用字典，因为您需要唯一值，因此我们必须使用列表（对）。

希望这有意义并且有所帮助！

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    Dim _lstOfFontsList As New List(Of String) _
    From {"Arial", "Arial", "Arial", "GEORGIA", "Arial",
          "Arial", "GEORGIA", "GEORGIA",
          "ABOlD", "ABOlD", "Arial"}

    Dim Output As List(Of KeyValuePair(Of String, Integer)) = New List(Of KeyValuePair(Of String, Integer))
    Dim Count As Integer = 1
    For i = 0 To _lstOfFontsList.Count - 1
        Dim Itm As String = _lstOfFontsList(i)

        'Erro trap as the last i will error as there is no next item at the end of the list
        Dim Nxt_Itm As String = Nothing
        If i + 1 < _lstOfFontsList.Count Then Nxt_Itm = _lstOfFontsList(i + 1)

        If Itm = Nxt_Itm Then
            'Same as next - so we +1 to the count
            Count += 1
        Else
            'Not same, so we need to add to the collection and reset the count to 1
            Output.Add(New KeyValuePair(Of String, Integer)(Itm, Count))
            Count = 1
        End If
    Next

    For Each pair In Output
        Debug.WriteLine(pair.Key & " | " & pair.Value)
        'Will write "Arial | 3" for example...
    Next

End Sub

H个鸡

VB.net，如何组合或连接字符串列表中最近的类似项目

1 个答案: