Question

Reverse Bubble Sort of Collections

Asked by: Cook09

Listed in the Code section are the different snippets that make up generating a collection and then sorting the collection so that it can be entered into a Data Validation cell for user selection.  The code itself works great.  However, it sorts from Top to Bottom, with the lower numbers being generated first and then moving progressively higher.

What I need is for the reverse to occur.  The higher number items are more relevant than the lower number ones.  Is there a way of making that happen?

Thanks,

Cook

With Sheets("Database")
    Set rng = Range(.Cells(5, "L"), .Cells(.Cells.Rows.Count, "L").End(xlUp))                 
End With 
'create a collection of the unique items from the Database sheet
For Each mCell In rng
    If mCell = lab_choice Then
        On Error Resume Next
        coll.Add CStr(mCell.Offset(0, 1)), CStr(mCell.Offset(0, 1))
    End If
Next mCell
    
're-dim and populate array with all members of the Collection 'coll'
ReDim coll_arr(coll.Count)
For i = 0 To coll.Count - 1
    coll_arr(i) = coll(i + 1)
Next i
    
' bubble sort the array
temp = ""
For n = 0 To coll.Count - 1
    For i = 0 To coll.Count - 1
        If coll_arr(n) < coll_arr(i) Then
            temp = coll_arr(n)
            coll_arr(n) = coll_arr(i)
            coll_arr(i) = temp
         If i = coll.Count Then
                coll_arr(coll.Count) = temp
            End If
            temp = ""
        End If
    Next i
Next n
    
'assemble a comma-separated string 
For i = 0 To coll.Count - 1
    str1 = str1 & coll_arr(i) & IIf(i <> coll.Count - 1, ",", "")
    Next i
                                  
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Asked On
2009-11-07 at 10:54:30ID24880740
Tags

Excel 2007

,

Collections

,

Sort

,

Bubble Sort

Topics

Microsoft Excel Spreadsheet Software

,

Microsoft Office Suite

Participating Experts
1
Points
500
Comments
12

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Answers

 

by: patrickabPosted on 2009-11-07 at 12:10:39ID: 25767817

Cook09,

The code below should do it. Spot the difference?

Patrick

ps. It would have been better if you had uploaded the file so that I could have tested the macro.

With Sheets("Database")
    Set rng = Range(.Cells(5, "L"), .Cells(.Cells.Rows.Count, "L").End(xlUp))                 
End With 
'create a collection of the unique items from the Database sheet
For Each mCell In rng
    If mCell = lab_choice Then
        On Error Resume Next
        coll.Add CStr(mCell.Offset(0, 1)), CStr(mCell.Offset(0, 1))
    End If
Next mCell
    
're-dim and populate array with all members of the Collection 'coll'
ReDim coll_arr(coll.Count)
For i = 0 To coll.Count - 1
    coll_arr(i) = coll(i + 1)
Next i
    
' bubble sort the array
temp = ""
For n = 0 To coll.Count - 1
    For i = 0 To coll.Count - 1
        If coll_arr(n) > coll_arr(i) Then
            temp = coll_arr(n)
            coll_arr(n) = coll_arr(i)
            coll_arr(i) = temp
         If i = coll.Count Then
                coll_arr(coll.Count) = temp
            End If
            temp = ""
        End If
    Next i
Next n
    
'assemble a comma-separated string 
For i = 0 To coll.Count - 1
    str1 = str1 & coll_arr(i) & IIf(i <> coll.Count - 1, ",", "")
Next i

                                              
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by: Cook09Posted on 2009-11-07 at 12:36:59ID: 25767935

Patrick,

It works excellent!

I have added so much to it, with help of course, I don't know what from 2007 would transfer over.  But, this is one of the last items, although, it is a work around.

The manual part works very well, and have kept most of it intact with very few changes as you can see.  Although, we did add integrated network integrated security, so there is no need for a password box.  That's also why it also makes sharing the workbook now more difficult, as we created network groups and then take the logon from their current local computer, compare it with the groups and then open it up if there is a match.

I'm going to be asking another question about this array and how to get it to display in a combobox, without taking the output to a worksheet range and then using rowsource to input it.  You might want to watch for that one given your familiarity with the current code.

Glad your browsing today...this is due tomorrow.

Ron

 

by: patrickabPosted on 2009-11-07 at 12:39:53ID: 25767942

Hi Ron,

Pleased it solved the problem.

Patrick

 

by: Cook09Posted on 2009-11-07 at 12:40:04ID: 25767944

Patrick,

Yes, I just spotted it.

     If coll_arr(n) > coll_arr(i) Then  versus
     If coll_arr(n) < coll_arr(i) Then

Clever,

Ron

 

by: Cook09Posted on 2009-11-07 at 12:42:47ID: 31651432

It looks like I may be doing this more full time.  Given about five years, this may come naturally, as yourself.

Ron

 

by: patrickabPosted on 2009-11-07 at 12:43:07ID: 25767953

Ron,

I never understood bubble sorting so I wrote what seemed to me to be a logical way to sort arrays. It worked, so I've used it ever since.

Patrick

 

by: patrickabPosted on 2009-11-07 at 12:43:53ID: 25767956

Ron - Thanks for the grade - Patrick

 

by: Cook09Posted on 2009-11-07 at 12:44:36ID: 25767958

Patrick,

I'm including it my library to pull from.  Now I have one for either situation.

Ron

 

by: patrickabPosted on 2009-11-07 at 12:58:50ID: 25768007

Ron,

>It looks like I may be doing this more full time. Given about five years, this may come naturally, as yourself.

Yes, but the difference is that you are clever enough to get paid for it!

Patrick

 

by: Cook09Posted on 2009-11-07 at 13:16:03ID: 25768089

Patrick,

I will not argue that one, but I've had to pull two "all-nighters" within the past two weeks and 12-14 hours a day on top of that.  This form, as simple as it may be, is but a beginning piece to a full utilization and collaboration package that will run on SharePoint 2007 (see what I mean by full-time).  I spent three days trying to figure out how to read from ListBox2, as it is multselect, and finally figured out that I needed a function code added to be able to copy the contents to a cell comment.  It actually works pretty well, but not through with the complete testing.  But, it did consume a lot of time.

The framework for this will be used in other areas.  I was keeping it quiet, until word got what I was working on, which doesn't seem like a big deal.  But, it has gone viral here at the University.  The Execs have met with my bosses' boss to know when I can demo this to the other 28 department Administrators, and the researchers have been inquiring as to its availability, the main Research Dept. at the main campus wants to compare this to their commercial version, etc, etc.  I thought it was just an input form.

My next step is for auto pivots, which they can't do.  But, the interest from the researchers came from the security portion,  because now they can collaborate with an enhanced version of this, or incorporate the security portion, and have a little, just a little, sense of comfort over their data.

Ron

 

by: patrickabPosted on 2009-11-07 at 13:31:06ID: 25768149

Ron,

As they say "No gain without pain".

It sounds as if you are making good progress. Keep going...

Patrick

 

by: Cook09Posted on 2009-11-07 at 13:34:39ID: 25768160

Thanks, but its always comforting to know there is a place to go to get some questions answered.  The arrary question that I just submitted is more of a best practice or how to do it in one step versus two or three.  I figured if this is what I'm going to be doing for a while, I might as well try to be as efficient as possible.

Ron

20120131-EE-VQP-002

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