如何在Powershell中創建排列數組？

Question

我對排列有疑問。 例如，我有下表：

我想用此表進行排列。 第一列有兩個選項，第二列和第三列有三個選項。 輸出排列數組應如下所示：

有18個選項可將迭代安排在1-3列中。 問題是如何使用Powershell創建腳本來獲得這樣的數組？ 以及如何將此數組輸出到Excel？

Answer 1

好的，從Joey的出色答案中分支出來，遍歷具有已知列的數組，您可以執行以下操作（PowerShell v3或更高版本，可以在較舊的版本中完成，但會變得更加復雜）。

#clean up any existing variables
Remove-Variable array, alliterations -ea 4

#create the sample array
[array]$array += [PSCustomObject]@{
    'Column 1' = 'Single load'
    'Column 2' = 'MAT1'
    'Column 3' = 'Country A'
}
[array]$array += [PSCustomObject]@{
    'Column 1' = 'Uniform distributed load'
    'Column 2' = 'MAT2'
    'Column 3' = 'Country B'
}
[array]$array += [PSCustomObject]@{
    'Column 1' = ''
    'Column 2' = 'MAT3'
    'Column 3' = 'Country C'
}

#Create all iterations from that array
ForEach($a in ($array.'Column 1'|Where{$_})){

    ForEach($b in ($array.'Column 2'|Where{$_})){

        ForEach($c in ($array.'Column 3'|Where{$_})){
            [array]$AllIterations += [PSCustomObject]@{
                'Column 1' = $a
                'Column 2' = $b
                'Column 3' = $c
            }
        }
    }
}

#Display results
$AllIterations

這將生成數組：

Column 1                 Column 2 Column 3 
--------                 -------- -------- 
Single load              MAT1     Country A
Single load              MAT1     Country B
Single load              MAT1     Country C
Single load              MAT2     Country A
Single load              MAT2     Country B
Single load              MAT2     Country C
Single load              MAT3     Country A
Single load              MAT3     Country B
Single load              MAT3     Country C
Uniform distributed load MAT1     Country A
Uniform distributed load MAT1     Country B
Uniform distributed load MAT1     Country C
Uniform distributed load MAT2     Country A
Uniform distributed load MAT2     Country B
Uniform distributed load MAT2     Country C
Uniform distributed load MAT3     Country A
Uniform distributed load MAT3     Country B
Uniform distributed load MAT3     Country C

要將其導入Excel，您可以按照Joey的建議將其導出到CSV文件，也可以使PowerShell打開Excel並將數據直接粘貼到其中。

#Copy array to clipboard as a tab delimited CSV
$AllIterations | ConvertTo-CSV -Delimiter "`t" -NoTypeInfo | Select -Skip 1 | Clip

#Open Excel, create a blank workbook, and paste the data in at cell A1
$XL = New-Object -ComObject Excel.Application
$WB = $XL.Workbooks.Add()
$XL.Visible = $true
$XL.ActiveSheet.Cells.Item(1).PasteSpecial()

Answer 2

您可以使用嵌套循環輕松地做到這一點：

$(foreach ($a in 'Single Load','Uniform distributed load') {
  foreach ($b in 'MAT1','MAT2','MAT3') {
    foreach ($c in 'Country A','Country B','Country C') {
      New-Object -Prop @{Column1=$a;Column2=$b;Column3=$c}
    }
  }
}) | Export-Csv foo.csv -NoTypeInformation

然后可以通過Excel打開CSV文件。