Vista - Sort an array of numbers in Powershell

Does anyone know a way to sort an array of numbers in Powershell?

Hi Stuart,

Thanks for replying. Basically what I'm trying to do is scrape a list
of prices from a list of eBay auctions and sort them in descending
order. With the code I'm using, everything is sorted into an array
list. I don't have much experience with these kinds of Collections, so
I'm not exactly sure how to sort things things. I thought there might
just be a Sort() method you could call. But that turns out not to be
the case from what I can see.

I tried using your example. On its own it works fine for me. I wasn't
quite able to integrate it with my code and get to sort everything in
order. I would probably have chuck away some of the existing code and
start again to get it to work.

Here is the code I'm using:
param ([string]$url = $(throw 'Enter a url'))

function ScrapePrices([String] $webpageText)
{
$returnMatches = New-Object System.Collections.ArrayList
$regex = @"
<td class=\"prices g-b\">(\$|€£)([0-9]{1,2}\.[0-9]{1,2})\</td>
"@
$resultingMatches = [Regex]::Matches($webpageText.ToString(), $regex,
"IgnoreCase")
foreach($match in $resultingMatches)
{
$cleanedMatch = $match.Groups[2].Value.Trim()
[void] $returnMatches.Add($cleanedMatch)
}
$returnMatches
}
function DisplayPrices([System.Collections.ArrayList]$list)
{
##foreach ($item in ($list.getEnumerator() | Sort Key -desc) )
{ Write-Host $item } #doesn't work
}
function GetWebpage([String]$url)
{
[System.Net.HttpWebRequest] $request =
[System.Net.HttpWebRequest]::Create($url)
$request.Timeout = 300

[IAsyncResult] $asyncResult = $request.BeginGetResponse($null, $null)

[System.Net.WebResponse] $response = $request.EndGetResponse
($asyncResult)
[System.IO.StreamReader] $respStreamReader = new-object
System.IO.StreamReader $response.GetResponseStream()
[string] $responseHTML = $respStreamReader.ReadToEnd()

$respStreamReader.Close()
$response.Close()

trap [System.Exception]
{
write-host "There was an error while trying to connect to `"$url`""
`n
Write-Host "Exception: " System.Exception
}
return $responseHTML
}
Clear-Host

DisplayPrices( (ScrapePrices (GetWebpage $url)) )


..\myScript.ps1 "http://books.shop.ebay.com/items/Audiobooks__The-Da-
Vinci-Code_W0QQLength87732706ZUnabridged36be1033QQ
Condition441b8cfbZBrandNew486d0d47QQ_catrefZ1QQ_dmptZUSQ5fAudiobooksQQ_flnZ1QQ_sacatZ29792QQ_ssovZ1QQ_trksidZp3286Q2ec0Q
2em282"

Hi Stephen,

This works for me:-

$a = New-Object -comObject System.Collections.ArrayList
[void]$a.Add(98)
[void]$a.Add(3)
[void]$a.Add(56)
[void]$a.Add(18)
"Current Values in a are :`n$a"
$a.Sort()
"Sorted values in a are :`n$a"

When I pipe $a to get-member I don't see a sort() method either, but
when I put
a comma before $a like:-

,$a | gm

There's more there. Something to do with Uuuummmmmm.......I think
Keith Hill once explained it here, but for the life of me I can't
remember the details, sorry.

Did you try changing the last $returnmatches to $returnmatches.sort()
at the end of your
ScrapePrices function?

Cheers,
Stuart










On 17 Dec, 21:57, stephenodonog...@xxxxxx wrote:

I actually managed to get it to work by modifying the function below
to something resembling the first example you gave me.


function DisplayListItems([System.Collections.ArrayList]$list)
{
$list | sort -desc -InputObject {[decimal]$_}
}

So that's basically it. Nice one. Cheers for your help.

There's more there. Something to do with Uuuummmmmm.......I thinkNo, it was Oisin!

http://groups.google.co.uk/group/mic...989da413364e12

Cheers,
Stuart


On 17 Dec, 22:57, Kryten <Kryte...@xxxxxx> wrote: