如何使用VB.NET统计部分匹配单词的出现次数？

发布于 2024-08-10 09:50:07 字数 827 浏览 6 评论 0 原文

我正在使用 VB 9.0 分割文本文件，然后计算术语的出现次数。假设我还想以不同的格式计算相同术语的出现次数，例如 ，然后将它们分组在一起，以便将结果输出到文本框，即

txtMyTerms.Text=<sequence>+<sequence

如何做到这一点？我当前的代码如下：

    Dim str As String = txtSource.Text
    Dim arr As String() = str.Split(Nothing)
    Dim searchTerm As String = "<sequence>"

    'create query to search for the term <sequence>
    Dim matchQuery = From word In arr Where word.ToLowerInvariant() = searchTerm.ToLowerInvariant() Select word

    ' Count the matches.
    Dim count As Integer = matchQuery.Count()
    txtMyTerms.Text = count.ToString()

原文

I am using VB 9.0 to split a text file and then count occurrences of the term <sequence>. Supposing I want also to count occurrences of the same term in a different format, e.g. <sequence and then group them together such that I output the result to a text box, i.e.

txtMyTerms.Text=<sequence>+<sequence

How to do it? My current code is as follows:

    Dim str As String = txtSource.Text
    Dim arr As String() = str.Split(Nothing)
    Dim searchTerm As String = "<sequence>"

    'create query to search for the term <sequence>
    Dim matchQuery = From word In arr Where word.ToLowerInvariant() = searchTerm.ToLowerInvariant() Select word

    ' Count the matches.
    Dim count As Integer = matchQuery.Count()
    txtMyTerms.Text = count.ToString()

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不离久伴 2024-08-17 09:50:07

我会尝试这样的事情。请注意，string.Compare 比重复调用 ToLowerInvariant() 更有效。

Dim str As String = txtSource.Text
Dim arr As String() = str.Split(Nothing)
Dim searchTerm1 As String = "<sequence>"
Dim searchTerm2 As String = "<sequence"

'create query to search for the term <sequence>
Dim matchQuery = From word In arr Where word.Compare(searchTerm1, StringComparison.InvariantCultureIgnoreCase) == 0 Or word.Compare(searchTerm2, StringComparison.InvariantCultureIgnoreCase) == 0 Select word

' Count the matches.
Dim count As Integer = matchQuery.Count()
txtMyTerms.Text = count.ToString()

I would try something like this. Note that string.Compare is more efficient than repeatedly calling ToLowerInvariant().

Dim str As String = txtSource.Text
Dim arr As String() = str.Split(Nothing)
Dim searchTerm1 As String = "<sequence>"
Dim searchTerm2 As String = "<sequence"

'create query to search for the term <sequence>
Dim matchQuery = From word In arr Where word.Compare(searchTerm1, StringComparison.InvariantCultureIgnoreCase) == 0 Or word.Compare(searchTerm2, StringComparison.InvariantCultureIgnoreCase) == 0 Select word

' Count the matches.
Dim count As Integer = matchQuery.Count()
txtMyTerms.Text = count.ToString()

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