如何在 powershell 中创建排列数组？

Question

我对排列有疑问。例如，我有以下 table:

我想用这个 table 进行排列。第一列有两个选项，第二列和第三列有三个选项。输出排列数组应如下所示：

有 18 个选项可以将项目排列在 1-3 列中。问题是如何使用powershell创建一个脚本来得到这样一个数组呢？以及如何将这个数组输出到 excel?

Answer 1

您可以使用嵌套循环轻松地做到这一点：

$(foreach ($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

然后可以通过 Excel 打开 CSV 文件。

Answer 2

好的，从 Joey 的出色回答开始，要迭代具有已知列的数组，您可以执行以下操作（PowerShell v3 或更高版本，它可以在旧版本中完成，但会变得更复杂）。

#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

这将生成数组：

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

要将其输入 Excel，您可以按照 Joey 的建议导出到 CSV 文件，或者您可以打开 PowerShell Excel 并将数据直接粘贴到其中。

#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()

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