#!/usr/bin/perl

#my $text = '1,2,3,4,5,6,7,8';
my $text = 'a,b,c,d,e,f,g,h,i,j';

my (@even, @odd);
push @{ $_ % 2 ? \@odd : \@even }, $_ for split /,/, $text;

print "odd = @odd, even = @even\n";

__END__

output (first $text):
odd = 1 3 5 7, even = 2 4 6 8

output (second $text):
odd = , even = a b c d e f g h i j