2010-09-26 On Sep 25, 11:17 pm, Paul Rubin <no.em...@nospam.invalid> wrote: > Python solution follows (earlier one with an error cancelled). All > crossposting removed since crossposting is a standard trolling tactic. > > from collections import defaultdict > > def collect(xss): > d = defaultdict(list) > for xs in xss: > d[xs[0]].extend(xs[1:]) > return list(v for k,v in sorted(d.items())) > > y = [[0,'a','b'], [1,'c','d'], [2,'e','f'], [3,'g','h'], [1,'i','j'], > [2,'k','l'], [4,'m','n'], [2,'o','p'], [4,'q','r'], [5,'s','t']] > > print collect(y)
Hi Paul, thanks for your solution, and thanks to many other who provided solutions. It'll take some time to go thru them. btw, i disagree about your remark on crossposting. For those interested, you can read in the following: • 〈Cross-posting & Language Factions〉 http://xahlee.org/Netiquette_dir/cross-post.html if anyone wants to argue with me about this, there's a my blog link at the bottom of the page where you can leave a comment. Feel free to use that. i'll go over the solutions and post if i have anything interesting to say. ☺ Possbly will select some to show on my site with credit of course. Xah ∑ xahlee.org ☄ -- http://mail.python.org/mailman/listinfo/python-list
