format change

Dear all,
I have a file like this
0 N3:A131:OG
0 O5:A131:HG
2 N3:A131:OG
3 N3:A131:OG
5 N3:A131:OG
6 N19:A131:OG
7 S21:A105:HD22
8 N2:A131:OG
8 O7:A131:HG

and I would like to change to
0 N3:A131:OG O5:A131:HG
2 N3:A131:OG
3 N3:A131:OG
5 N3:A131:OG
6 N19:A131:OG
7 S21:A105:HD22
8 N2:A131:OG O7:A131:HG

Do anybody have any idea?
Thank you very much.

juihuahsieh@nhri.org.tw (moggces) writes:

> Dear all,
> I have a file like this
[...]
> and I would like to change to
[...]

1 {stuff[$1] = stuff[$1] " " $2; if ($1 > max) max = $1;}
END {for (foo=0; foo<=max; ++foo) if (foo in stuff) print foo,stuff[foo];}

HTH
Ulrich
--
"Reinigungsbenzin? Das nehmen doch die in der Reinigung..."