字數統計

'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