Это немного долго, но довольно прямо.
Объяснение в комментариях к коду.
код
Option Explicit
Sub AppendToSingleCell()
Dim newString As String
Dim LastRow As Long, LastColumn As Long
Dim Sht As Worksheet
Dim FullArr As Variant, MergeCellsArr As Variant
Dim i As Long, j As Long
Set Sht = ThisWorkbook.Sheets("Sheet1") ' <-- rename "Sheet1" to your sheet's name
With Sht
LastRow = FindLastRow(Sht) ' call sub that finds last row
LastColumn = FindLastCol(Sht) ' call sub that finds last column
' populate array with enitre range contents
FullArr = .Range(.Cells(1, 1), .Cells(LastRow, LastColumn))
ReDim MergeCellsArr(1 To LastRow) ' redim 1-D array for results (same number of rows as in the 2-D array)
' looping through array is way faster than interfacing with your worksheet
For i = 1 To UBound(FullArr, 1) ' loop rows (1st dimension of 2-D array)
newString = FullArr(i, 1)
For j = 2 To UBound(FullArr, 2) ' loop columns (2nd dimension of 2-D array)
If IsEmpty(FullArr(i, j)) = False Then
newString = newString & " " & FullArr(i, j)
End If
Next j
MergeCellsArr(i) = newString ' read new appended string to new 1-D array
Next i
' paste entire array to first column
.Range("A1").Resize(UBound(MergeCellsArr)).value = MergeCellsArr
End With
End Sub
============================================== =========================
Function FindLastCol(Sht As Worksheet) As Long
' This Function finds the last col in a worksheet, and returns the column number
Dim LastCell As Range
With Sht
Set LastCell = .Cells.Find(What:="*", After:=.Cells(1), LookAt:=xlPart, LookIn:=xlFormulas, _
SearchOrder:=xlByColumns, SearchDirection:=xlPrevious, MatchCase:=False)
If Not LastCell Is Nothing Then
FindLastCol = LastCell.Column
Else
MsgBox "Error! worksheet is empty", vbCritical
Exit Function
End If
End With
End Function
============================================== =========================
Function FindLastRow(Sht As Worksheet) As Long
' This Function finds the last row in a worksheet, and returns the row number
Dim LastCell As Range
With Sht
Set LastCell = .Cells.Find(What:="*", After:=.Cells(1), LookAt:=xlPart, LookIn:=xlFormulas, _
SearchOrder:=xlByRows, SearchDirection:=xlPrevious, MatchCase:=False)
If Not LastCell Is Nothing Then
FindLastRow = LastCell.Row
Else
MsgBox "Error! worksheet is empty", vbCritical
Exit Function
End If
End With
End Function