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How to remove duplicate elements from an array?

4 posts in this topic

As the topic states, I need a way to remove duplicate elements from a single dimensional array. I am trying to populate a combo box using an ini file as my source. The layout of the section of the ini file in question is...








There is more to it than that as there is more than one subnet for each site. So in the code below, I read the entire "Sites" section to the array $inisites, and then use a For loop to move the site names into a single dimensional array called $sitearray. Now I need a way to yank out all the dupes. Have tried a few things (see the 2nd For Loop below), but keep winding up with dimension range errors in the middle of execution. Anyone have any ideas? I found UDF that claims to remove duplicates from an array, but that did nothing at all.


$inisites = IniReadSection("Ale.ini","Sites")

Dim $sitearray[$inisites[0][0]]

$sitearray[0] = $inisites[0][0]

For $i = 1 To $inisites[0][0]

$sitearray[$i] = $inisites[$i][1]


For $j = 1 To $sitearray[0]

For $i = 1 To $sitearray[0]

MsgBox(4096,"","$i=" & $i & @CRLF & $sitearray[$j] & @CRLF & $sitearray[$i]) ; debugging purposes

If $sitearray[$j] = $sitearray[$i] Then





$sitelist = _ArrayToString($sitearray,"|")


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#include <array.au3>

Global $array[16] = [15, 1, 2, 3, 3, 4, 5, 6, 6, 7, 8, 9, 9, 9, 9, 0]

$mynewarray = dupecheckerthingy($array)

_ArrayDisplay($mynewarray, '')

Func dupecheckerthingy($showmethearray)
    Local $tmparray[1] = ['']
    For $i = 1 To UBound($showmethearray) - 1
        _ArraySearch($tmparray, $showmethearray[$i])
        If @error Then _ArrayAdd($tmparray, $showmethearray[$i])
    $tmparray[0] = 'Number of elements = ' & UBound($tmparray) - 1
    Return $tmparray

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you rock. thanks!

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#4 ·  Posted (edited)

Here is my version, its not required any includes (Array.au3):

Func _ArrayDeleteClones($sArray)
    If Not IsArray($sArray) Then Return SetError(1)
    If UBound($sArray, 0) > 1 Then Return SetError(2)
    Local $NewArr[1], $IsFound=0, $NewArrCnt=0, $Extended=0
    For $i = 1 To UBound($sArray) - 1
        $IsFound = 0
        For $j = 1 To UBound($NewArr)-1
            If $sArray[$i] = $NewArr[$j] Then
                $IsFound = 1
                $Extended += 1
        If Not $IsFound Then
            $NewArrCnt += 1
            ReDim $NewArr[$NewArrCnt+1]
            $NewArr[$NewArrCnt] = $sArray[$i]
    $NewArr[0] = UBound($NewArr) - 1
    Return SetError(0, $Extended, $NewArr)

EDIT: A litle edit, now it's also return an @Extended that include number of duplicates that was removed from the array. And also a litle error checking returns.

Edited by MsCreatoR



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