Get-ContiguousRange.ps1
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# .SYNOPSIS # Returns the first item of the first contiguous range of items of the specified length function Get-ContiguousRange { [CmdletBinding()] Param ( [Parameter(Mandatory)] [int[]]$Items, [ValidateRange(1, [int]::MaxValue)] [int]$RequiredLength = 1 ) $Index = 0 $Items | ` ForEach-Object { [pscustomobject]@{ Difference = $_ - $Index; Value = $_; Index = $Index++ } } | ` Group-Object -Property Difference | ` Where-Object -Property Count -GE $RequiredLength | ` Select-Object -First 1 -ExpandProperty Group | Select-Object -First 1 -ExpandProperty Value } # e.g. 1..20 | ForEach-Object { Get-ContiguousRange -Items (1..9 + 25..35 + 50..90) -RequiredLength $_ } |