How to use powershell to reorder CSV columns

Question

Input file:

column1;column2;column3
data1a;data2a;data3a
data1b;data2b;data3b

Goal: output file with reordered columns, say

Answer 1

I'd do it this way:

$new_csv = new-object system.collections.ArrayList
get-content mycsv.csv |% {
$new_csv.add((($_ -split ";")[0,2,1]) -join ";") > $nul
}
$new_csv | out-file myreordered.csv