Converting list of strings to numbers - powershell

Question

I have a directory whose subdirectories are all numbers:
./2856
./2357
./10198
and so on.
I'm trying to write a Powershell script that would return the largest subdirectory name smaller than X.
So in this example, for the input 3000 it should return 2856.
However what I've written so far looks very cumbersome to me, and I'm wondering how it can be shortened:
Get-ChildItem "$path" `
| ?{ $_.PSIsContainer } `
| Select-Object #{Name="AsInt"; Expression={[int]$_.Name}} `
| Select-Object -expand AsInt `
| ?{$_ -lt [int]$lessThanNumber} `
| measure-object -max `
| Select-Object -expand Maximum

Answer 1

I tried this with PowerShell v3:
$max = 3000
$cur = 0
ls -d | %{
# Potential for issues if the directory name cannot be cast to [int]
$name = ([int]$_.Name)
if (($name -gt $cur) -and ($name -le $max)) {
$cur = $name
}
}
($cur = 2856 at the end)

Answer 2

With PowerShell v3:
Get-ChildItem $path -dir | Select *,#{n='Number';e={[int]$_.Name}} |
Where Number -lt $lessThanNumber | Sort Number | Select -Last 1

Answer 3

If you have V3:
#(Get-ChildItem -Path $Path -Directory -Name |
ForEach-Object {$_ -as [int]}) -lt $LessThanNumber |
sort | select -last 1

Answer 4

You can try :
Get-ChildItem "$path" | Where-Object {$_.PSIsContainer -and [int]$_.name -le 3000} `
| Sort-Object -Property #{exp={[int]$_.name}} `
| Select-Object -Last 1
You can write it :
Get-ChildItem "$path" | ? {$_.PSIsContainer -and [int]$_.name -le 3000} `
| Sort -Property #{exp={[int]$_.name}} `
| Select -Last 1
If you want to avoid errors due to these directory names which are not integers :
Get-ChildItem "$path" | ? {$_.PSIsContainer -and ($_.name -as [int]) -le 3000} `
| Sort -Property #{exp={$_.name -as [int]}} `
| Select -Last 1

Answer 5

Yet another (v3) example. Only directory names that contain numbers are passed on and the Invoke-Expression cmdlet is used to evaluate the name into a number (no explicit cast is needed)
$x = 3000
Get-ChildItem -Directory | Where-Object {
$_.Name -notmatch '\D' -and (Invoke-Expression $_.Name) -lt $x
} | Sort-Object | Select-Object -Last 1