Created
April 1, 2022 07:43
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$sample = @( | |
[PSCustomObject]@{ | |
From = [datetime]::Parse("01.01.2022 00:00:00") | |
To = [datetime]::Parse("10.01.2022 23:59:59") | |
} | |
[PSCustomObject]@{ | |
From = [datetime]::Parse("05.01.2022 00:00:00") | |
To = [datetime]::Parse("15.01.2022 23:59:59") | |
} | |
[PSCustomObject]@{ | |
From = [datetime]::Parse("08.01.2022 00:00:00") | |
To = [datetime]::Parse("09.01.2022 23:59:59") | |
} | |
[PSCustomObject]@{ | |
From = [datetime]::Parse("20.01.2022 00:00:00") | |
To = [datetime]::Parse("25.01.2022 23:59:59") | |
} | |
[PSCustomObject]@{ | |
From = [datetime]::Parse("24.01.2022 00:00:00") | |
To = [datetime]::Parse("31.01.2022 23:59:59") | |
} | |
) | |
$main = { | |
Clear-Host | |
getOverlapsFrom($sample) | |
} | |
function getOverlapsFrom($List) { | |
process { | |
$sorted = $List | Sort-Object -Property From | |
$head = $sorted | Select-Object -First 1 | |
$tail = $sorted | Select-Object -Skip 1 | |
$tail | getOverlapsStartingWith $head | |
} | |
} | |
function getOverlapsStartingWith($init) { | |
begin { | |
$last = $init | |
$result = @() | |
} | |
process { | |
if(-not ($_ | isOverlapping $last)) { | |
$last = $_ | |
return | |
} | |
$result += [PSCustomObject]@{ | |
From = if($last.From -lt $_.From ) { $_.From } else { $last.From } | |
To = if($_.To -lt $last.To) { $_.To } else { $last.To } | |
} | |
if($_.To -lt $last.To) { | |
$last = $_ | |
} | |
} | |
end { | |
$result | |
} | |
} | |
function isOverlapping($that) { | |
process { | |
return $that.From -lt $_.To -and $_.From -le $that.To | |
} | |
} | |
&$main |
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