2009年4月15日 星期三

字數統計

image

'字數統計
Public Class Form1
    '重覆計算版
    'Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    '    Dim str2 = ""
    '    Dim i
    '    Dim c
    '    Dim str1 = "明天會更好,後天會更好,天天更好。明天會更好,後天會更好,天天更好明天會更好,後天會更好,天天更好。明天會更好,後天會更好,天天更好"
    '    ' MsgBox("字串長度為:" & str1.ToString.Length)
    '    Dim j
    '    For j = 1 To str1.ToString.Length
    '        c = 0
    '        For i = 1 To str1.ToString.Length
    '            If Mid(str1, i, 1) = Mid(str1, j, 1) Then c = c + 1
    '        Next
    '        str2 = str2 & Mid(str1, j, 1) & "->共有:" & c & "個" & vbNewLine
    '    Next
    '    MsgBox(str2)
    'End Sub

    '不重覆計算版
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim strChk = ""
        Dim str2 = ""
        Dim i
        Dim c
        Dim str1 = "明天會更好,後天會更好,天天更好。明天會更好,後天會更好,天天更好明天會更好,後天會更好,天天更好。明天會更好,後天會更好,天天更好"
        ' MsgBox("字串長度為:" & str1.ToString.Length)
        Dim j
        For j = 1 To str1.ToString.Length
            If InStr(strChk, Mid(str1, j, 1)) = 0 Then
                c = 0
                For i = 1 To str1.ToString.Length
                    If Mid(str1, i, 1) = Mid(str1, j, 1) Then c = c + 1
                Next
                str2 = str2 & Mid(str1, j, 1) & "->共有:" & c & "個" & vbNewLine
                strChk = strChk & Mid(str1, j, 1)
            End If
        Next
        MsgBox(str2)
    End Sub
End Class

產生前十個 Conway數列項

image_thumb

'產生第一至十個 conway數列項
Public Class Form1
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim j
        Dim str2 = "1" & vbNewLine
        j = 2
        Dim t = 1
        While j <= 10
            str2 = str2 & conway(t) & vbNewLine
            t = conway(t)
            j = j + 1
        End While
        MsgBox(str2)
    End Sub
    Function conway(ByVal n)
        Dim i, c
        Dim str1 = ""
        i = 1
        c = 0
        While i <= n.ToString.Length
            c = c + 1
            '
            If Mid(n.ToString, i, 1) <> Mid(n.ToString, i + 1, 1) Then
                str1 = str1 & c & Mid(n.ToString, i, 1)
                c = 0
            End If
            i = i + 1
        End While
        conway = str1
    End Function
End Class

2009年4月14日 星期二

10 個 Internet 上的 VB 資源

MSDN Library

VBForDummies.net

Channel 9

ASP.NET Web

The Microsoft Public Newsgroups

.NET 247

Google CodeSearch

kbAlertz

CodePlex

Microsoft Google for Searching

 

摘自:Visual Basic 2008 FOR DUMmIES

書籍推薦

美麗程式:頂尖程式設計師的思考方式 Leading Programmers Explain How They Think

中文版:http://www.books.com.tw/exep/prod/booksfile.php?item=0010399005#catalog

2009年4月11日 星期六