or download this
c:\@Work\Perl\monks>perl -wMstrict -MData::Dump -le
"my $line = '2 3 3 3 5 7 8 12 32 44 55 12 3 23 43 33 1 4 25 43 42 1';
...
"2 3 3 3 5 7 8 12 32 44 55 12 3 23 43 33 1 4 25 43 42 1"
[1, 1, 2, 3, 3, 3, 3, 4, 5, 7, 8, 12, 12, 23, 25, 32, 33, 42, 43, 43,
+44, 55]