comp115 Q (1 Viewer)

[sukiyaki]

i only did A

what kinda things you used for b,c ,d ? like while ? for.. etc..

 

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Originally posted by sukiyaki
i only did A

what kinda things you used for b,c ,d ? like while ? for.. etc..

for C, look at douche's isprime.cpp file he uploaded..u can use that as long as u commented it modified it around...from there, u use that concept to do B and C. douche also did a gcd.cpp file that u can look at for D...

 

[sukiyaki]

oh! okay, thanks '...'

 

[Rahul]

man...E is a bit fucked to code.

i got a good algo, but keeps screwing up when i code.

need to try again tmw with a clear(er) head

prac 6 exercise, the palindrome, is in the textbook

 

[ND]

I used arrays for the bonus part, i couldn't think of any elegant method using only the stuff we've been taught in 115.

 

[boinkBOINK]

arrays? oh fosh sounds complicatd
=\
lol i take it u dont wanan share ur wealth of knowledge

 

[ND]

Well i'm not gonna post the code up. All you need to do is get a loop to break up the numbers and store them into an array as it goes. Then just get another loop to pair up the numbers and store them into another array (or the in different positions of the same array if you want).

 

[boinkBOINK]

oh cool
sounds pretty much simple
how ur explaining it
LOL now to find out what arrays are \=

 

[ND]

I learned arrays (along with almost everything else, cos i don't have the book) from this site: http://www.cplusplus.com/doc/tutorial/

 

[Orange Juice]

.

 

[Rahul]

you dont need arrays, instead of storing it, just output the letter in the loop.

dont know if it would fit into the code but...

 

[ND]

Umm yeh but what are you gonna store the broken up numbers into? Separate ints?

 

[Rahul]

i dont know how to explain it...i used ascii code...and stored the numbers as a strings.
strings can be manipulated much easily.

 

[pb]

i didnt even look at E
that assignment was bad

 

[wolfboy]

bonus part d

i understand the direction needed to take to acheive part d). I am having troubles coding it. Could someone explain the loops in a little depth.
thanx

 

[:: ck ::]

*cough* thread was exactly a yr ago lolz..

wolfboy: follow the logic they gave u on the site, its not too bad

 

[gbong]

d's the squared digit length rite??
jus use a counter and a while loop to count the number of digits. yeh. meh dats wat i did newayz.

 

[Catastrophe]

int n=10;
int d=1;
int num=0;
int b=0;

while (n<=1000000)

n=n*10;

d=d*10;


num=((id%n)/d)-num;
num--;



b=b+num^2;

b++;

whats wrong with this code to get 'int b' dammit?

my last problem and i know noone that are kind enough to help...!

 

[:: ck ::]

err havn looked in depth but

"^2" isn't c++ syntax... try num * num if u wanna square something.. or maybe try pow(x,y) and #include <cmath> if u use pow

 

[gbong]

^2 i fink will work if u declare in cmath in the header thing

#include <cmath>
but easier to jus use n*n or wateva.. yeh