From: Nobody Imparticular <[EMAIL PROTECTED]> > Hi any and all; > > I am having a heck of time getting my head around a > little problem I have run into; I got this question > during an interview recently and, well, failed > miserably. Now I am crazy to figure out the answer > since the answer seems like it would be easy, but > isn't (to me). > > Lets say I have the following data in a text file; > > A B C D E F G > A B C D E F H > A B C D E F I J > A B C D K L > A B C D M N > A B C D O P > A B C D Q R > A S T > A S U > > I need to massage the data and print it out (to the > screen or file) as follows: > > A > B C D > E F > G > H > I J > K L > M N > O P > Q R > S > T > U > > I'm really at a loss for what to do. I've tried a > myriad of things (recursive calls to build a hash, to > build an array, to build a string) and basically I > could never fully get there .
I think the codeword is "trie". Have a look at the Text::Trie module on CPAN. You will need to massage the datastructure created by the module a bit for that output, but I think it will help. Jenda ===== [EMAIL PROTECTED] === http://Jenda.Krynicky.cz ===== When it comes to wine, women and song, wizards are allowed to get drunk and croon as much as they like. -- Terry Pratchett in Sourcery -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/
