Tree Data Type for top-down travelling

Question

I need a tree data structure to represent a category-subcategory. Only algorithm I need is to find all children from a given node. What is the effective constructure of such tree?
Thanks.

Answer 1

The only reason they post is they know somebody will
do their homework for them. The point being, don'tdo
it for them. The ultimate point being -- you don't
want to work with someone that got through theircomp
sci degree by posting to forums (and copying from
others), but it actually happens. I had a friend in
college that got his degree this way, and to his
graduating day -- he couldn't get 3 lines of code to
coplile (yes, that means ever.)Come on, I don't believe for a minute that you can
cheat your way to a masters degree by getting "help"
from forums. And if you can it's the university that's
to blame.I never said it was a Master in CS.. BS in CS.
You say you won't do homework for people. Why not? if
you find a question interesting why not do it and post
if with a full explanation and full source code. A
forum is a public environment. What you do here is
there for everyone to see. By doing this you actually
help universities stop potential cheating. It's
somewhat counter-intiutive but this is how it works.Plagiarism is still cheating, and I believe it is taking credit for work you did not do: copying from a forum, public of not, is still cheating. In ancient times (when I was in college) they used to expell you for turning in other people's work (if you were caught).
Also what do you know about this person you suspect is
posting homework for the purpose of cheating. Nothing.
It can be an isolated person who really has no one
else to ask.In a University, college, or even HS environment there are always other people to ask--and that is how the system there works.
Also why is helping someone with homework so
especially awful. I would rather not help someone with
work related problems. Why should I help someone for
free to do something they've been hired to do and get
paid to do?What is the differenct? When you get the degree you are certified by a major institution of learning to know the materials covered in the coursework you completed. Employers used to assume becasue you have a degree you actually knew a little about the subject. Not any more!!! I wish you could see the millions of dollars each year that are wasted screening unqualified people that have degrees and the millions of dollars wasted trying to work with the ones that made it through the interviews because you did assume they knew at least the basics of the course work for the degree. (I speak here from experience.) We have had to make much more rigorous testing for our candidates to screen out the unqualified--basically you have to take an aggregate final to get into the interview process.
Also I find cheaters who makes it to a job quite
benign. There are other types I dislike more, like the
psychopats and the bullies to name a few.If I have 10 workers and 8 of them cheated their way through college and do not have the problem solving, imagination, and skills needed to be productive and I have 2 "bullies" that give me the world on a silver platter when ever I ask them to do something... guess who is going to get the raises and promotions.
My conclusion is that you should post at forums only
if it gives YOU something.I support free information, and I share knowlege and ideas freely and try to cultivate an environment that other will do so too. I have to put a limit there when students want HW done--it is their assignment to do it, they are graded not only on correctness, but also on imagination, problem solving. Do it for them and you weaken the system and eventually the industry.
As I have said in forums before: Cheating at college level and getting your degree when you are unqualified now costs millions in dollars that have to passed on to the general public to maintain normal operation. Does cheating hurt? Believe it or not, it cost you dollars out of your pocket each and every day.