cách trộn lẫn lộn 1 chuỗi ký tự

[huhumalu]

Có search được code của Kutool.

Sub GetString()
'Updateby Extendoffice
    Dim xStr As String
    Dim FRow As Long
    Dim xScreen As Boolean
    xScreen = Application.ScreenUpdating
    Application.ScreenUpdating = False
    xStr = Application.InputBox("Enter text to permute:", "Kutools for Excel", , , , , , 2)
    If Len(xStr) < 2 Then Exit Sub
    If Len(xStr) >= 8 Then
        MsgBox "Too many permutations!", vbInformation, "Kutools for Excel"
        Exit Sub
    Else
        ActiveSheet.Columns(1).Clear
        FRow = 1
        Call GetPermutation("", xStr, FRow)
    End If
    Application.ScreenUpdating = xScreen
End Sub
Sub GetPermutation(Str1 As String, Str2 As String, ByRef xRow As Long)
    Dim i As Integer, xLen As Integer
    xLen = Len(Str2)
    If xLen < 2 Then
        Range("A" & xRow) = Str1 & Str2
        xRow = xRow + 1
    Else
        For i = 1 To xLen
            Call GetPermutation(Str1 + Mid(Str2, i, 1), Left(Str2, i - 1) + Right(Str2, xLen - i), xRow)
        Next
    End If
End Sub

Hàm Random anh ndu

Function UniqueRandomNum(Bottom As Long, Top As Long, Amount As Long)
'Application.Volatile '<--- Neu muon gia tri thay doi khi bam F9
On Error Resume Next
If Amount > Top - Bottom + 1 Then Amount = Top - Bottom + 1
With CreateObject("Scripting.Dictionary")
Do
.Add Int(Rnd() * (Top - Bottom + 1)) + Bottom, ""
Loop Until .Count = Amount
UniqueRandomNum = WorksheetFunction.Transpose(.Keys)
End With
End Function

Cái này ứng dụng được cùng cái random của anh ndu thì khỏi phải xuất ra sheets.