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Hi all guys,

which is the best way to move rows inside an array?

Let's say I have the following 2D array

A|0
B|0
C|0
D|0
E|1
F|1

How can I move E -> 0 and F ->1 moving other rows down?
I tried _arrayswap() bv it's not the solution 'cause I don't want to swap elements but just put selected ones on top

Final result should be:

E|1
F|1
A|0
B|0
C|0
D|0

Thanks in advance,

Marco

Edited by marko001
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Can you please tell us why you need to move rows?
Means: Which problem do you want to solve by moving rows E and F?

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Oh sure, no problem.

I'm retrieving crypto assets from KuCoin, using API call, based on an algorythm.

I need to add these retrieved assets to my pool of "already existing assets".

Once I retrieve the list, $aretrievedassets[$i][12], where 2..12 is a bunch of data coming from Exchange, 0 is asset name and 1 is "owned", I add to this array all my owned assets.

So I will have and array of [$i+$j] elements where the first $i are items coming from remote and $j my currently owned assets.

My GUI can accept only $x assets to be viewed per time so I need, first, to put my owned assets on top and only after these all the other assets.

Is it clear or you need the code? nothing secret, by the way.

M.

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Using the _ArrayMultiColSort UDF from @Melba23, this example accomplishes the desired output from your provided example source array.

#include <Array.au3>
Dim $a[][] = [["A",0],["B",0],["C",0],["D",0],["E",1],["F",1]]
_ArrayDisplay($a)

Dim $aSortOrder[][]=[[1,1],[0,0]]
_ArrayMultiColSort($a,$aSortOrder)
_ArrayDisplay($a)

You could also use some combination of _ArrayPush(), _ArrayPop(), _ArrayInsert(), or _ArrayAdd() as necessary to accomplish what you want.

Edited by spudw2k
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You could also script a function reusable in similar cases (e.g. move a block of rows to top or bottom of a 1D/2D array), let's name the function _ArrayRowMove :

#Include <Array.au3>
#Include <MsgBoxConstants.au3>

; Local $aArray[] = ["A0", "B1", "C2", "D3", "E4", "F5", "G6", "H7"]
; or
Local $aArray[][] = [["A",0],["B",1],["C",2],["D",3],["E",4],["F",5],["G",6],["H",7]]

_ArrayDisplay($aArray, "before move")

_ArrayRowMove($aArray, 2, 5) ; rows 2 to 5 moved to top
; or
; _ArrayRowMove($aArray, 2, 5, False) ; rows 2 to 5 moved to bottom

If @error Then
    Msgbox($MB_TOPMOST, "_ArrayRowMove", "error = " & @error)
Else
    _ArrayDisplay($aArray, "after move")
EndIf

;==================================================================
Func _ArrayRowMove(ByRef $aArray, $iStart, $iEnd, $bTopDest = True)

    If Not IsArray($aArray) Then Return SetError(1, 0, 0)

    Local $aBackup, $iDims, $iRows, $iCols, $iInterval, $iInc = -1
    $iDims = UBound($aArray, $UBOUND_DIMENSIONS)
    $iRows = UBound($aArray, $UBOUND_ROWS)
    $iCols = UBound($aArray, $UBOUND_COLUMNS) ; always 0 for 1D array (+++)
    
    If $iDims < 1 Or $iDims > 2 Then Return SetError(2, 0, 0)
    If $iRows = 0 Then Return SetError(3, 0, 0) ; not sure about this test

    If $iStart = Default Or $iStart < 0 Then $iStart = 0
    If $iEnd = Default Or $iEnd > $iRows - 1 Then $iEnd = $iRows - 1
    $iInterval = $iEnd - $iStart
    If $iInterval < 0 Then Return SetError(4, 0, 0)

    $aBackup = $aArray

    If $iDims = 1 Then ; 1D
        If $bTopDest Then ; move to top
            For $i = $iStart -1 To 0 Step -1
                $iInc += 1 ; 0+
                $aArray[$iEnd - $iInc] = $aBackup[$i]
            Next
            For $i = 0 To $iInterval
                $aArray[$i] = $aBackup[$iStart + $i]
            Next
        Else ; move to bottom
            For $i = $iEnd +1 To $iRows -1
                $iInc += 1 ; 0+
                $aArray[$iStart + $iInc] = $aBackup[$i]
            Next
            $iInc = -1
            For $i = $iRows -1 - $iInterval To $iRows -1
                $iInc += 1 ; 0+
                $aArray[$i] = $aBackup[$iStart + $iInc]
            Next
        EndIf
    Else ; 2D
        If $bTopDest Then ; move to top
            For $i = $iStart -1 To 0 Step -1
                $iInc += 1 ; 0+
                For $j = 0 To $iCols -1
                    $aArray[$iEnd - $iInc][$j] = $aBackup[$i][$j]
                Next
            Next
            For $i = 0 To $iInterval
                For $j = 0 To $iCols -1
                    $aArray[$i][$j] = $aBackup[$iStart + $i][$j]
                Next
            Next
        Else ; move to bottom
            For $i = $iEnd +1 To $iRows -1
                $iInc += 1 ; 0+
                For $j = 0 To $iCols -1
                    $aArray[$iStart + $iInc][$j] = $aBackup[$i][$j]
                Next
            Next
            $iInc = -1
            For $i = $iRows -1 - $iInterval To $iRows -1
                $iInc += 1 ; 0+
                For $j = 0 To $iCols -1
                    $aArray[$i][$j] = $aBackup[$iStart + $iInc][$j]
                Next
            Next
        EndIf
    EndIf

    Return 1 ; success
EndFunc

Update Dec 23, 2022
* Added code for 1D array
* Added error checking

Edited by pixelsearch
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#include <Array.au3>

Dim $aArray[][] = [["A", 0], ["B", 0], ["C", 0], ["D", 0], ["E", 1], ["F", 1]]

_ArrayDisplay(_ArrPopToTop($aArray, "B|D|F"))
_ArrayDisplay(_ArrPopToTop($aArray, "D|E"))
_ArrayDisplay(_ArrPopToTop($aArray, "C"))

Func _ArrPopToTop($a, $val = "", $index = 0)
    Local $asplit = StringSplit($val, "|", 3)
    _ArrayReverse($asplit)
    For $j = 0 To UBound($asplit) - 1
        $x = _ArraySearch($a, $asplit[$j], "", "", "", 0)
        _ArrayInsert($a, $index, _ArrayExtract($a, $x, $x))
        _ArrayDelete($a, $x + 1)
    Next
    Return $a
EndFunc

 

Edited by Deye
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