Auto scheduling - vba

Question

I am trying to make an auto scheduling program with an excel.
For example, each number is certain job assigned to the person given day.
1/2 1/3 1/4 1/5
Tom 1 2 2 ?
Justin 2 3 1 ?
Mary 3 3 ?
Sam 1 ?
Check O O X ? ## check is like =if(b2=c2,"O","X")
The things I want to make sure is every person is given a different job from yesterday.
My idea
while
randomly distribute jobs for 1/5
wend CheckCell = "O"
But I found that checking cell in the vba script doesn't work - the cell is not updated in each while loop.
Could you give me a little pointer for these kinds of program? Because I am new to vbaScript, any kinds of help would be appreciated.

Answer 1

Using VBA, I'm sure there are better ways to do this, but this will check the values from the penultimate column against values from last column and if they match it will write "O" to under the last column, else it will write "X":
Sub foo()
Dim ws As Worksheet: Set ws = Sheets("Sheet1")
'declare and set your worksheet, amend as required
LastRow = ws.Cells(ws.Rows.Count, "A").End(xlUp).Row
'get the last row with data on Column A
LastCol = ws.Cells(1, ws.Columns.Count).End(xlToLeft).Column
counter = 0 'set counter
For i = 2 To LastRow 'loop through penultimate column and add values to array
If ws.Cells(i, LastCol - 1).Value <> "" Then
Values = Values & ws.Cells(i, LastCol - 1) & ","
End If
Next i
Values = Left(Values, Len(Values) - 1)
Values = Split(Values, ",") 'split values into array
For i = 2 To LastRow 'loop through last column and add values to array
If ws.Cells(i, LastCol).Value <> "" Then
ValuesCheck = ValuesCheck & ws.Cells(i, LastCol) & ","
End If
Next i
ValuesCheck = Left(ValuesCheck, Len(ValuesCheck) - 1)
ValuesCheck = Split(ValuesCheck, ",")
For y = LBound(Values) To UBound(Values) 'loop through both arrays to find all values match
For x = LBound(ValuesCheck) To UBound(ValuesCheck)
If Values(y) = ValuesCheck(x) Then counter = counter + 1
Next x
Next y
If counter = UBound(Values) + 1 Then 'if values match
ws.Cells(LastRow + 1, LastCol).Value = "O"
Else 'else write X
ws.Cells(LastRow + 1, LastCol).Value = "X"
End If
End Sub

Answer 2

just to clarify are you looking to implement the random number in the vba or the check.
To do the check the best way would be to set the area as a range and then check each using the cells(r,c) code, like below
Sub checker()
Dim rng As Range
Dim r As Integer, c As Integer
Set rng = Selection
For r = 1 To rng.Rows.Count
For c = 1 To rng.Columns.Count
If rng.Cells(r, c) = rng.Cells(r, c + 1) Then
rng.Cells(r, c).Interior.Color = RGB(255, 0, 0)
End If
Next c
Next r
End Sub
this macro with check the text you have selected for the issue and change the cell red if it matches the value to the right.
To make it work for you change set rng = selection to your range and change the rng.Cells(r, c).Interior.Color = RGB(255, 0, 0) to the action you want

Answer 3

A sligthly different approach than the other answers.
Add this function:
Function PickJob(AvailableJobs As String, AvoidJob As String)
Dim MaxTries As Integer
Dim RandomJob As String
Dim Jobs() As String
Jobs = Split(AvailableJobs, ",")
MaxTries = 100
Do
MaxTries = MaxTries - 1
If MaxTries = 0 Then
MsgBox "Could find fitting job"
End
End If
RandomJob = Jobs(Int((1 + UBound(Jobs)) * Rnd()))
Loop Until RandomJob <> AvoidJob
PickJob = RandomJob
End Function
And put this formula in your sheet
=PickJob("1,2,3",D2)
where D2 points to is the previous job