sg_puzzle_1215.ps1

$list = @"
1 Partridge in a pear tree
2 Turtle Doves
3 French Hens
4 Calling Birds
5 Golden Rings
6 Geese a laying
7 Swans a swimming
8 Maids a milking
9 Ladies dancing
10 Lords a leaping
11 Pipers piping
12 Drummers drumming
"@


# 1.Split $list into a collection of entries, as you typed them, 
# and sort the results by length. As a bonus, see if you can 
# sort the length without the number.

$listEntries = $list -split "`n"

$listEntries | Sort-Object -Property Length

$listEntries -replace "[\d]+\s","" | Sort-Object -Property Length


# 2.Turn each line into a custom object with a properties for Count and Item.

$objColl = @()

for ($i = 0; $i -lt $listEntries.Length; $i++) {

    $obj = [PSCustomObject] @{ 
           
        Count = ($listEntries[$i] -split ' ',2)[0]
        Item = ($listEntries[$i] -split ' ',2)[1]
    
    } # End Object Creation

    $objColl += $obj

} #End for


# 3.Using your custom objects, what is the total number of all bird-related items?

$birds = 'Partridge','Dove','Hen','Bird','Geese','Swan'
$sum = 0

foreach ($bird in $birds) {
    
    foreach ($obj in $objColl) {

        if ("$obj.Item" -match "$bird") {
        
            $sum = $sum + $obj.Count
                    
        } #End if          

    } #End foreach $obj

} #End foreach $bird

Write-Output "Total number of bird related items is: $sum."

Write-Output "Total number of items is: $($objColl | Measure-Object -Property Count -Sum | Select-Object -ExpandProperty Sum)."


# Bonus: Using PowerShell what is the total number of cumulative gifts?

$cumSum = 0

for ($i = 0; $i -lt $objColl.Length; $i++) {

    for ($j = 0; $j -le $i; $j++) {

        $cumSum = $cumSum + $objColl[$j].Count
    
    } #end for $j 

} #end for $i

Write-Output "The total number of cumulative gifts is: $cumSum."