Get the equivalent index value in a 2 arrays using VBA - excel

Question

I need to assigned a value on Column B depending on the condition in Column A. I formulate a simple code using IF...ElseIf condition (see code below). I have 1000 conditions and I am thinking if I can use a 2 separate arrays for the value of Column A and get the index of the value in column A to 1st array (Array1 ) and match it to the 2nd array (AssignedArray). Something like, for each value found in Column A check the Array1 if the value is exist and get the index and match the index to AssignedArray. Like for example,
Array1 = Array("DL2005", "EFRUEN", "DESTDIDIER", "EOGRADY3", "EKARLSON1", "EOKUTOMI1")
AssignedArray = Array("Trader", "Trader", "Operations", "Trader", "Analyst", "Operations")
CODE
For x = 1 To Sheets(1).Cells(Rows.Count, 1).End(xlUp).Row
For Each wrd In Sheets(1).Cells(x, 1)
val = wrd
If UCase(val) = "DL2005" Then
Sheets(1).Cells(x, 3).Value = "Trader"
ElseIf UCase(val) = "EFRUEN" Then
Sheets(1).Cells(x, 3).Value = "Trader"
ElseIf UCase(val) = "DESTDIDIER" Then
Sheets(1).Cells(x, 3).Value = "Operations"
ElseIf UCase(val) = "EOGRADY3" Then
Sheets(1).Cells(x, 3).Value = "Trader"
ElseIf UCase(val) = "EKARLSON1" Then
Sheets(1).Cells(x, 3).Value = "Analyst"
ElseIf UCase(val) = "EOKUTOMI1" Then
Sheets(1).Cells(x, 3).Value = "Operations"
End If
Next wrd
Next x
Is it possible to do that?Or is there any way on how to simplify my code instead of using IF ELSEIF condition.

Answer 1

If you have 1k conditions (as you do), then I imagine neither If nor Select statements are appropriate. Furthermore, creating/maintaining expressions (in your code) that evaluate to two 1k-element arrays may be burdensome.
A maintenance friendly approach might be to keep the items in Array1 on some worksheet, and keep the contents of AssignedArray right next to it. Something like the below. Say the yellow values are items that you would have put into Array1 and green values are items you would have put into AssignedArray (I only have 25 as an example).
Then you wouldn't necessarily need any VBA and could purely use Excel functions like VLOOKUP -- or MATCH and INDEX in conjunction. For example, I put this formula in cell E4, which tries to find the value in D4 among the values in column A and returns the corresponding value from column B:
=INDEX($B$1:$B$25,MATCH(D4,$A$1:$A$25,0))
If you still wanted to use VBA, this code should loop over cells D4:D8 (which is the correct range for my spreadsheet, but probably not for yours), make them uppercase (in memory only, not on the sheet), then write the corresponding values in G4:G8:
Option Explicit
Private Sub FillInAssociatedValuesValue()
Dim inputKeys() As Variant ' <-- AKA Array1
inputKeys = ThisWorkbook.Worksheets("Sheet1").Range("A1:A25").Value2 ' Change to wherever items from Array1 are kept
Dim inputValues() As Variant '<-- AKA AssignedArray
inputValues = ThisWorkbook.Worksheets("Sheet1").Range("B1:B25").Value2 ' Change to wherever items from AssignedArray are kept
If (UBound(inputKeys, 1) - LBound(inputKeys, 1)) <> (UBound(inputValues, 1) - LBound(inputValues, 1)) Then
MsgBox ("The number of keys should be the same as the number of associated values. Code will stop running now.")
Exit Sub
End If
Dim dict As Object 'Shouldn't need to add a reference
Set dict = CreateObject("Scripting.Dictionary")
' One pass to fill the dictionary. If there are duplicates, will only add first instance.
Dim rowIndex As Long
For rowIndex = LBound(inputKeys, 1) To UBound(inputKeys, 1)
If Not dict.Exists(inputKeys(rowIndex, 1)) Then
dict.Add UCase$(inputKeys(rowIndex, 1)), inputValues(rowIndex, 1)
End If
Next rowIndex
Dim Key As String
With ThisWorkbook.Worksheets("Sheet1")
For rowIndex = 4 To 8 ' I needed to loop over range D4:D8
Key = UCase$(.Cells(rowIndex, "D").Value2)
If dict.Exists(Key) Then
.Cells(rowIndex, "G").Value2 = dict.Item(Key)
Else
' Some logic in case input is not found, and cannot be mapped to some associated value
.Cells(rowIndex, "G").Value2 = "VALUE NOT FOUND"
End If
Next rowIndex
End With
End Sub

Answer 2

To keep it simple; use For loops to compare Array1 to each cell in column A and if there is a match, use Offset put the corresponding element from AssignedArray into the cell on the right.
Dim Array1 As Variant, AssignedArray As Variant
Dim x As Long, i As Long
Array1 = Array("DL2005", "EFRUEN", "DESTDIDIER", "EOGRADY3", "EKARLSON1", "EOKUTOMI1")
AssignedArray = Array("Trader", "Trader", "Operations", "Trader", "Analyst", "Operations")
For x = 2 To Sheets(1).Cells(Rows.Count, 1).End(xlUp).Row
For i = LBound(Array1) To UBound(Array1)
If Cells(x, 1).Value = Array1(i) Then
Cells(x, 1).Offset(, 1).Value = AssignedArray(i)
End If
Next i
Next x

Answer 3

Try
Sub test()
Dim Ws As Worksheet
Dim Array1, AssignedArray
Dim s As String, i As Integer, r As Long, x As Long
Dim k As Integer
Array1 = Array("DL2005", "EFRUEN", "DESTDIDIER", "EOGRADY3", "EKARLSON1", "EOKUTOMI1")
AssignedArray = Array("Trader", "Trader", "Operations", "Trader", "Analyst", "Operations")
Set Ws = Sheets(1)
r = Ws.Cells(Rows.Count, 1).End(xlUp).Row
With Ws
For x = 1 To r
s = UCase(.Cells(x, 1))
For i = LBound(Array1) To UBound(Array1)
If s = Array1(i) Then
k = i
Exit For
End If
Next i
.Cells(x, 3) = AssignedArray(k)
Next x
End With
End Sub
If you have a lot of data, it is better to speed up the results by arranging the results into a single sheet instead of entering them one by one into the cell.
Sub test2()
Dim Ws As Worksheet
Dim Array1, AssignedArray
Dim s As String, i As Integer, r As Long, x As Long
Dim k As Integer
Dim vDB, vR()
Array1 = Array("DL2005", "EFRUEN", "DESTDIDIER", "EOGRADY3", "EKARLSON1", "EOKUTOMI1")
AssignedArray = Array("Trader", "Trader", "Operations", "Trader", "Analyst", "Operations")
Set Ws = Sheets(1)
With Ws
vDB = .Range("a1", .Range("a" & Rows.Count).End(xlUp))
r = UBound(vDB, 1)
ReDim vR(1 To r, 1 To 1)
For x = 1 To r
s = UCase(vDB(x, 1))
For i = LBound(Array1) To UBound(Array1)
If s = Array1(i) Then
k = i
Exit For
End If
Next i
vR(x, 1) = AssignedArray(k)
Next x
.Range("c1").Resize(r) = vR
End With
End Sub