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Sorting function

Posted on 1998-07-02
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Last Modified: 2010-05-03
I have two arrays that I want to put in order from the greatest to the least.  I want to do this through a function that returns another array back.
Here is the description of the function that I want to use

Private Function PutInOrder(arrTotals() As Integer, arrValues() As String, HowMany as Integer) As Variant

I want it order by the array arrTotals and the array that is return I want made up of the corressponding values from arrvalue.  The indexes are the same, ie arrTotals(3) is the totals for arrValue(3) <- and this is what should be put into the final array.  The HowMany is how large I want the array.  So it will return say only the top 8 values.

Now a few requirements speed is not the overpowering issue, although somewhat important, the fewest possible resource is more important.
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Question by:clsmaster
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10 Comments
 
LVL 8

Expert Comment

by:MikeP090797
ID: 1464846
If the speed is not the main issue, and you have not more then 1000 items to sortt, you can simply add them to a sorted listbox:
For I = 1 to n
List1.AddItem arrValues(i)
List1.ItemData(List1.NewIndex)=arrTotals(i)
Next I

The list items will contain the strings, and the itemdata will contain the numbers
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Author Comment

by:clsmaster
ID: 1464847
Speed is not important, but like I said resource are I don't want to have to create a form and a listbox and all just to attain what I'm looking for.  What I want returned is the array, so that it can be further processed.
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Author Comment

by:clsmaster
ID: 1464848
Actually I want to change this a little.  Instead of returning the array I want it to order the two arrays.
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Accepted Solution

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clifABB earned 200 total points
ID: 1464849
Private Function PutInOrder(arrTotals() As Integer, arrValues() As String, HowMany as Integer) As Variant

Dim nTemp As Integer
Dim nCnt1 As Integer
Dim nCnt2 As Integer

For nCnt1 = 1 to UBound(arrTotals) - 1
  For nCnt2 = nCnt1 + 1 to UBound(arrTotals)
    If arrTotals(nCnt1) > arrTotals(nCnt2) Then
      nTemp = arrTotals(nCnt1)
      arrTotals(nCnt1) = arrTotals(nCnt2)
      arrTotals(nCnt2) = nTemp
    End If
  Next nCnt2
Next nCnt1

For nCnt1 = 1 to UBound(arrValues) - 1
  For nCnt2 = nCnt1 + 1 to UBound(arrValues)
    If arrValues(nCnt1) > arrValues(nCnt2) Then
      nTemp = arrValues(nCnt1)
      arrValues(nCnt1) = arrValues(nCnt2)
      arrValues(nCnt2) = nTemp
    End If
  Next nCnt2
Next nCnt1
End Function
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LVL 6

Expert Comment

by:alamo
ID: 1464850
So are you saying that instead of just the top HowMany entries you want the entire arrays sorted?

Would it be acceptable to return an integer array giving the sorted indices of the original arrays? That would probably be easier and quicker, and you wouldn't have to make a duplicate of the original arrays for sorting..
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Expert Comment

by:alamo
ID: 1464851
clif, I think the two arrays need to be ordered in step, i.e. both sorted based on the values in arrTotals (unless the question has changed unrecognizably from the original :-)
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LVL 6

Expert Comment

by:clifABB
ID: 1464852
In that case, replace the two loops with this one:
For nCnt1 = 1 to UBound(arrTotals) - 1
  For nCnt2 = nCnt1 + 1 to UBound(arrTotals)
    If arrTotals(nCnt1) > arrTotals(nCnt2) Then
      nTemp = arrTotals(nCnt1)
      arrTotals(nCnt1) = arrTotals(nCnt2)
      arrTotals(nCnt2) = nTemp
      nTemp = arrValues(nCnt1)
      arrValues(nCnt1) = arrValues(nCnt2)
      arrValues(nCnt2) = nTemp
    End If
  Next nCnt2
Next nCnt1

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LVL 6

Expert Comment

by:clifABB
ID: 1464853
The last code won't make sense (or work) if arrTotals and arrValues are different sizes.
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Expert Comment

by:Jagar
ID: 1464854
Sorry for the inactivity on this question, but I've been away for the weekend.  I'll get to checking this sometime today and then grade your answer
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Author Comment

by:clsmaster
ID: 1464855
Everything looks good Thanks
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