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Wednesday, 12 January 2011 09:50 Last Updated on Saturday, 03 September 2011 11:25
Imagine that you have a large file with 20 or more worksheets. It could be, for instance, a file with snapshot financial models for the companies in your coverage universe or a breakdown of home sales in different regions of the city.
You want to sort these worksheets into some kind of order that would allow you and your team to access your data more quickly. The SortSheets macro will help you to sort your sheet tabs into any kind of order or metric you want (e.g alphabetically, by ranking, etc.) using the qsort algorithm
(an explanation of the algorithm can be found at http://en.wikipedia.org/wiki/Quicksort).
Exhibit 1A: A sample file with multiple worksheets (unsorted)
Exhibit 1B: A sample file with multiple worksheets (sorted)
Exhibit 2: SortSheets macro (VBA)
Sub SwapSheets(S1 As Integer, S2 As Integer) Dim Sh1 As Worksheet, Sh2 As Worksheet Set Sh1 = Sheets(S1) Set Sh2 = Sheets(S2) Sh1.Move Before:=Sh2 Sh2.Move Before:=Sheets(S1) End Sub Function QSortPartitionSheets(L As Integer, _ R As Integer, Pvt As Integer) As Integer Dim PivotValue As String Dim SI As Integer Dim I As Integer PivotValue = Sheets(Pvt).Name SwapSheets Pvt, R SI = L For I = L To R - 1 If Sheets(I).Name <= PivotValue Then SwapSheets I, SI SI = SI + 1 End If Next SwapSheets SI, R QSortPartitionSheets = SI End Function Sub QSortSheets(L As Integer, R As Integer) Dim Pvt As Integer Dim NewPvt As Integer If R > L Then NewPvt = QSortPartitionSheets(L, R, L) QSortSheets L, NewPvt - 1 QSortSheets NewPvt + 1, R End If End Sub Public Sub SortSheets() QSortSheets 1, Sheets.Count End Sub
The code in Exhibit 2 allows you to sort your worksheets alphabetically. To sort by some other metric (e.g. ranking, regional sales numbers, etc.), simply change QSortPartitionSheets to use variants instead of strings, and define a function to lookup the value using the sheet name (as demonstrated in Exhibit 3).
Exhibit 3: Modified QSortPartitionSheets (VBA)
Function YourFunction(SheetName As String) As Variant ' ... Returns the ranking of the company, the sales number ' of the region, etc. End Function Function QSortPartitionSheets(L As Integer, _ R As Integer, Pvt As Integer) As Integer Dim PivotValue As Variant Dim SI As Integer Dim I As Integer PivotValue = YourFunction(Sheets(Pvt).Name) SwapSheets Pvt, R SI = L For I = L To R - 1 If YourFunction(Sheets(I).Name) <= PivotValue Then SwapSheets I, SI SI = SI + 1 End If Next SwapSheets SI, R QSortPartitionSheets = SI End Function