谁能解释下下面代码意思，谢

yzfl8272zl

Sub match_more()
    Dim iSourceRow As Long
    Dim iSourceCol As Integer
    Dim iDealRow As Integer
    Dim iDealCol As Integer
    Dim iRep
    Dim iCol As Integer
    Dim i, j, k As Long
    Dim ifound As Integer

    iRep = InputBox("Please input the source data first column number(1,2,3...):", "input column number")

    If iRep = "" Then
        MsgBox "You need input a value in input box!", vbInformation, "Input"
        End
    End If



    If Not IsNumeric(iRep) Then
        MsgBox "You need input the integer value!", vbInformation, "Input Number"
        End
    End If

    iCol = iRep

    If iCol < 3 Then
        MsgBox "You need put the source data after the data you need deal with!", vbInformation, "Put after"
        End
    End If

    Cells(1, 1).CurrentRegion.Select
    iDealRow = Selection.Rows.Count
    iDealCol = Selection.Columns.Count

    Cells(1, iCol).CurrentRegion.Select
    iSourceRow = Selection.Rows.Count
    iSourceCol = Selection.Columns.Count

    Cells(1, iDealCol + 1) = "Deal"
    Cells(1, iCol + iSourceCol) = "Source"

    For i = 2 To iDealRow
        Cells(i, iDealCol + 1) = i - 1
    Next i
    For i = 2 To iSourceRow
        Cells(i, iCol + iSourceCol) = i - 1
    Next i

    Range(Cells(1, 1), Cells(iDealRow, iDealCol + 1)).Select
    Selection.Sort Key1:=Cells(2, 1), Order1:=xlAscending, Header:=xlGuess, _
        OrderCustom:=1, MatchCase:=False, Orientation:=xlTopToBottom
    Range(Cells(1, iCol), Cells(iSourceRow, iCol + iSourceCol)).Select
    Selection.Sort Key1:=Cells(2, iCol), Order1:=xlAscending, Header:=xlGuess, _
        OrderCustom:=1, MatchCase:=False, Orientation:=xlTopToBottom

    Range(Cells(1, iCol), Cells(1, iCol + iSourceCol - 1)).Select
    Selection.Copy
    Cells(1, iCol + iSourceCol + 2).Select
    Cells(1, iCol + iSourceCol + 2 + iSourceCol) = "Deal"
    ActiveSheet.Paste
    Application.CutCopyMode = False

    k = 2
    ifound = 0
    For i = 2 To iDealRow
        ifound = 0
        For j = k To iSourceRow
            If Cells(i, 1) = Cells(j, iCol) Then
                Range(Cells(j, iCol), Cells(j, iCol + iSourceCol - 1)).Select
                Selection.Copy
                Cells(i, iCol + iSourceCol + 2).Select
                Cells(i, iCol + iSourceCol + 2 + iSourceCol) = Cells(i, iDealCol + 1)
                ActiveSheet.Paste
                Application.CutCopyMode = False
                ifound = 1
                k = j
                Exit For
            End If
        Next j
        If ifound = 0 Then
            Cells(i, iCol + iSourceCol + 2) = "Not found"
            Cells(i, iCol + iSourceCol + 2 + iSourceCol) = Cells(i, iDealCol + 1)
        Else
            ifound = 0
        End If
        Application.StatusBar = "Finished " & Format(i / iDealRow * 100, "0.00") & "%"
    Next i

    Range(Cells(1, 1), Cells(iDealRow, iDealCol + 1)).Select
    Selection.Sort Key1:=Cells(2, iDealCol + 1), Order1:=xlAscending, Header:=xlGuess, _
        OrderCustom:=1, MatchCase:=False, Orientation:=xlTopToBottom
    Range(Cells(1, iCol), Cells(iSourceRow, iCol + iSourceCol)).Select
    Selection.Sort Key1:=Cells(2, iCol + iSourceCol), Order1:=xlAscending, Header:=xlGuess, _
        OrderCustom:=1, MatchCase:=False, Orientation:=xlTopToBottom
    Range(Cells(1, iCol + iSourceCol + 2), Cells(iSourceRow, iCol + iSourceCol + 2 + iSourceCol)).Select
    Selection.Sort Key1:=Cells(2, iCol + iSourceCol + 2 + iSourceCol), Order1:=xlAscending, Header:=xlGuess, _
        OrderCustom:=1, MatchCase:=False, Orientation:=xlTopToBottom

    Columns(iDealCol + 1).Clear
    Columns(iCol + iSourceCol).Clear
    Columns(iCol + iSourceCol + 2 + iSourceCol).Clear
    Application.StatusBar = False
End Sub