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We are doing the exact same course at UNSW :) CS / Maths

Rant: I was incredibly disappointed with the physics course. My friends who do chem say the same thing about chemistry. In both subjects, you're required to do an immense amount of memorisation, especially of things like historical scientific developments. A lot of the physics content in the...

Shitloads of phys past trials: https://skydrive.live.com/?cid=6A56337708D441B4&id=6A56337708D441B4%215602

Meh. I feel bad for taking this thread off-topic now =\ back to SDD!

No. I will just think of you as a member of the small set of year 12 NSW informaticians. There's only like 5 of us anyway.

sudo hostname

alright who are you cyberbully -_- i'm not giving you the code to the b-session. solve it yourself :P EDIT: unless you're darren, in which case, hi

I'm not sure of the proper pseudocode conventions for files, but OPEN input AS SEQUENTIAL FILE Sum = 0 Current = READ LINE FROM input WHILE Current != SENTINEL VALUE DO Sum = Sum + Current Current = READ LINE FROM input END WHILE PRINT 9 - ((Sum + 9) MOD 10) CLOSE input

Cyberbully nice try, just because you change a few words in the problem statement doesn't mean I don't recognise it :P Chocolate Shop from AIO 2008 Senior. #include <stdio.h> int main() { FILE *fin, *fout; long i, amountOfPurchases, amountToAdd, backUpOfTotalBought...

It is legit. It's called recursion and it's a very common strategy in computer science (if you take CS or software engineering, you'll learn it about halfway through first year). It's not taught in the SDD curriculum so don't worry too much about it...

The Australian Informatics training site is orac.amt.edu.au. It has all the past problems and you can submit source-code solutions for them in many common languages. http://projecteuler.net/ is an international problem-solving site where you work out the answers on your own and submit a...

For question 1, if the input was 20, the multiples of 3 or 5 below 20 are 3, 5, 6, 9, 10, 12, 15, 18, and the sum of these is 78. Your solution to q2 is correct, but its runtime is exponential in proportion to its input. If I implement it and try to evaluate n=100... >>> def fib(n): ...

Do people want real (as in, not HSC-level) algorithms questions? They probably won't be much help for SDD specifically -- they test high-level mathematical reasoning more than anything else. Here are three nice ones off the top of my head. The first 2 could in theory come up in an SDD exam, I...

Are we meant to be answering questions in this thread? Or just posting questions?

You still divide by 2! because (4,1,1) is the same as (4,1,1).

When uncertain, bash out the cases! If we put ONE ball in the first urn: 6C1 possibilities for this ball * (5C1 + 5C2 + 5C3 + 5C4), for each possible amount in the second urn TWO balls in the first urn: 6C2 * (4C1 + 4C2 + 4C3) THREE balls: 6C3 * (3C1 + 3C2) FOUR balls: 6C4 * (2C1) Add...

It sounds like you're bad at sophisticated writing. This can be fixed by doing the following: - Read a lot of high-quality critical writing (literary theory is great for this but often boring. Maybe start with Roger Ebert's film reviews?) - Read past student essays - Try to emulate these styles...

Try again? Maybe it just took a while to upload. It works for me.

Oh you guys are gonna love me. Cambridge fully worked solutions: https://dl.dropbox.com/u/1103246/4U%20answers.zip

*Flexes his algorithm muscles, cracks neck. mmmmmm* Excuse my dodgy pseudocode. BEGIN Fill(Table, n) FOR r=0 TO n-1 Table[r][r] = TRUE Table[r][n-r-1] = TRUE NEXT r END Fill