This function is passed a reference to an array and an integer. It reformats the array into an array of arrays where length of each array (except perhaps the last one - for obvious reasons) is equal to the given integer.
sub reform {
    my ($r_old, $x) = @_;
    my @old = @{$r_old};
    my @new;

    push @new, [splice @old, 0, $x] while @old;

    @new;
}

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In reply to Reformat Array by davorg

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