How about an iterator for it?
sub gen_group_array {
my ($group,$array) = @_;
my ($start,$end) = (0,$group - 1);
return sub {
my $str = join ' ',@$array[$start..$end];
$start += $group;
$end += $group;
return $str;
};
}
my @array = qw(a b c d e f);
my $group_size = 2;
my $grouping = gen_group_array($group_size,\@array);
print $grouping->() . "\n" for 1 .. ($#array+1)/$group_size;
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