Solved

Permutating a word

Posted on 2001-06-14
7
304 Views
Last Modified: 2010-05-02
I have a problem that I have not been able to solve, that is I want to take a word and return all of its permutations. So, far I have not been successful in creating such a function.

For example if a word contains 5 characters then it should return an array of 120 combinations of the letters.

Example of permutation the word ape which has only 6 permutations.
ape
aep
pae
pea
eap
epa
0
Comment
Question by:tunmire
  • 3
  • 2
  • 2
7 Comments
 
LVL 4

Accepted Solution

by:
beckingh earned 300 total points
ID: 6192436
0
 
LVL 4

Expert Comment

by:beckingh
ID: 6192466
0
 
LVL 4

Expert Comment

by:beckingh
ID: 6192470

Modified version of the code I linked to.  Add a commandbutton (Command1) a textbox (Text1) and  listbox (List1) to a form.  Then add this code.

It will add all the permutations to the listbox so you can see them.  It would be easy enough to add them to an array.

Sub Perm(A() As String, m, n As Integer)
    Dim i As Integer
    Dim Temp As String


    If m = 1 Then
        PrintPerm A, n 'Print out the permutations
       
    Else


        For i = 1 To m
            Temp = A(i)
            A(i) = A(m) 'Exchange A(i) and A(m), could have made a Sub To Do this
            A(m) = Temp
            Perm A, m - 1, n 'Recursive Function call
            Temp = A(m)
            A(m) = A(i) 'Exchange A(m) and A(i)
            A(i) = Temp
        Next i
    End If
End Sub


Private Sub Command1_Click()
    Dim strArray() As String
    Dim llLoop As Integer
    Dim llLength As Integer
    llLength = Len(Text1.Text)
    ReDim strArray(llLength)
   
    For llLoop = 1 To llLength
        strArray(llLoop) = Mid(Text1.Text, llLoop, 1)
    Next
   
    Perm strArray(), llLength, llLength
End Sub


Public Sub PrintPerm(A() As String, n As Integer)
    Dim i As Integer
    Dim strVar As String

    List1.Clear
   
    For i = 1 To n
        strVar = strVar & (A(i))
    Next i
   
    List1.AddItem strVar
End Sub
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 18

Expert Comment

by:bobbit31
ID: 6192501
good thing i checked back in before i started doing it from scratch...  let us know if beckingh's solution isn't sufficient (but i don't see why it wouldn't be)
0
 
LVL 8

Expert Comment

by:AJAY CHADHA
ID: 6192820
Here is the answer..

http://www.experts-exchange.com/jsp/qShow.jsp?qid=20094203

Good Luck...
Ajay Chadha .. :-)
0
 
LVL 8

Expert Comment

by:AJAY CHADHA
ID: 6192822
This example will do the trick...

http://www.websamba.com/chadhaajay/files/permutation.zip

Ajay Chadha ..:-)
0
 
LVL 18

Expert Comment

by:bobbit31
ID: 6192884
nice one ajay!  where ya been?

now that i look at the question, this definitely looks like a homework...  oh well, his loss (tunmire's).

0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I’ve seen a number of people looking for examples of how to access web services from VB6.  I’ve been using a test harness I built in VB6 (using many resources I found online) that I use for small projects to work out how to communicate with web serv…
You can of course define an array to hold data that is of a particular type like an array of Strings to hold customer names or an array of Doubles to hold customer sales, but what do you do if you want to coordinate that data? This article describes…
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…

679 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question