powershell - Remove duplicates from beginning of array -

similar removing duplicate values powershell array want remove elements array. issue is, actively work end of array want keep last instance of duplicate. | select -uniq removes duplicates come after in array.

example (taken above link modified little bit):

$a = @(1,2,5,3,0,4,5,6,2,7,8,9,0) $a = $a | select -uniq

output $a:

1,2,5,3,0,4,6,7,8,9

but desired output i'm looking for:

1,3,4,5,6,2,7,8,9,0

essentially want leave last instance of duplicate.

thank you!

one option reverse array select -unique working in reverse, reverse result normalize it.

$a = @(1,2,5,3,0,4,5,6,2,7,8,9,0) [array]::reverse($a) $a = $a | select -unique [array]::reverse($a) $a -join ',' 1,3,4,5,6,2,7,8,9,0