Finding top 4 or 3 or 2 values in an array

[Phaser 0]

I have an array that gets updated each time data in entered

local $array[12]=[1,9,11,5,1,12,10,16,8,1,9,3]

I need to know when when 4 of the elements have hit 10 or greater, so from the above I would like to be told that

indexes 2,5,6,7 have met the criteria as there are 4 elements of 10 or greater.

How do I perform a check each time data is entered to find the top 4 values? I can get my head around it. I will also be doing the same on the top 3 and top 2 but assume top 4 would be the strating point to understand it.

Edited February 25, 2012 by Phaser

[water 1,935]

Do you just have to know the number of elements or the indices of the elements > 10?

[Phaser 0]

No, I need to know that there are 4 of 10 or greater and the indices they are at, thats why I cant get my head around it

[water 1,935]

You would need something like this:

#include <array.au3>

Global $iLimit = 10
Global $iCount = 0
Global $aInput[12] = [1,9,11,5,1,12,10,16,8,1,9,3]
Global $aIndices[UBound($aInput)]

For $i = 0 To UBound($aInput)-1
    If $aInput[$i] >= $iLimit Then
        For $j = 0 To $iCount
            If $aIndices[$j] = $aInput[$i] Then ContinueLoop
            If $aIndices[$j] = "" Then
                $aIndices[$j] = $aInput[$i]
                $iCount = $iCount + 1
                ExitLoop
            EndIf
        Next
    Endif
Next
_ArrayDisplay($aIndices)
ConsoleWrite("# of indices >= " & $iCount & @CRLF)

[Phaser 0]

Many thanks water, I will see if I can work with that, thanks for your help

[Malkey 187]

Try this.

Local $aInput[12] = [1, 9, 11, 5, 1, 12, 10, 16, 8, 1, 9, 3]
Local $iLimit = 10
Local $iCount = 0
Local $sIndices = ""

For $i = 0 To UBound($aInput) - 1
    If $aInput[$i] >= $iLimit Then
        $iCount += 1
        If $iCount <= 4 Then
            $sIndices &= $i & ","
        Else
            ExitLoop
        EndIf
    EndIf
Next

ConsoleWrite("The indices with values >= 10 are " & StringTrimRight($sIndices, 1) & "." & @CRLF)

#cs
Output is:-
The indices with values >= 10 are 2,5,6,7.
#ce