Project Euler
Post: #1
I'm just curious whether anybody here has participated in Project Euler? If you have, have you ever referenced Project Euler when applying for jobs or to schools/colleges/universities/things of that ilk?
I learned of Project Euler in December, and started solving problems a fortnight or so ago to try to achieve Level 1 by the end of the year (I have a... rather low opinion of my mathematical ability
)
![[Image: sealfin.png]](http://projecteuler.net/profile/sealfin.png)
I learned of Project Euler in December, and started solving problems a fortnight or so ago to try to achieve Level 1 by the end of the year (I have a... rather low opinion of my mathematical ability
)
Mark Bishop
Post: #2(Mar 13, 2013 11:10 AM)sealfin Wrote: If you have, have you ever referenced Project Euler when applying for jobs or to schools/colleges/universities/things of that ilk?
Haven't played with it myself, but I participated in an interview (as an interviewer) at a previous job where a coworker of mine brought up a problem from Project Euler to test our interviewee. Can't hurt to have that skillset under your belt.
Post: #3
I've looked at the website and solved some of the problems for fun. I never registered an account or anything like that though. How do you achieve Level 1? By solving a certain number of problems? (Don't have that much experience with job applying, so not quite applicable question for me).
Post: #4
This looks fun as hell! I immediately registered an account.
Looks like you level up for every 25 problems you solve. Once you solve a problem you can access a thread about it and discuss the solution with other people. It seems like a reeeeally cool little rabbit hole.
Quote: How do you achieve Level 1? By solving a certain number of problems?
Looks like you level up for every 25 problems you solve. Once you solve a problem you can access a thread about it and discuss the solution with other people. It seems like a reeeeally cool little rabbit hole.
Justin Ficarrotta
http://www.justinfic.com
"It is better to be The Man than to work for The Man." - Alexander Seropian
Post: #5
I'd not heard of it before today, but I did a few this afternoon.
You can friend me with this code:
You can friend me with this code:
Code:
41381076451676_84078668b178211e4cb7a50cd421c73a
Post: #6
Here's mine:
This is bad. This is really, really bad. I'm 10 problems in and my eyes are bleary. I haven't done anything else since the post I made above. I'm trying to make myself stop but I peeked at #11 and I know how to do it. It would just take a little while. I could just not sleep and do it real quick.
O gods, what have I done?
Code:
34660844451874_25e3b03bbbb49c27f0b2c946d8232a73This is bad. This is really, really bad. I'm 10 problems in and my eyes are bleary. I haven't done anything else since the post I made above. I'm trying to make myself stop but I peeked at #11 and I know how to do it. It would just take a little while. I could just not sleep and do it real quick.
O gods, what have I done?
Justin Ficarrotta
http://www.justinfic.com
"It is better to be The Man than to work for The Man." - Alexander Seropian
Post: #7(Mar 14, 2013 01:42 AM)OneSadCookie Wrote: You can friend me with this code:
(Mar 14, 2013 03:08 AM)JustinFic Wrote: Here's mine:
Here's mine:
Code:
86013192444836_cbab5ac975cbfe91925b3389af9bd154(Mar 13, 2013 11:37 PM)JustinFic Wrote:(Mar 13, 2013 06:17 PM)Zorg Wrote: How do you achieve Level 1? By solving a certain number of problems?Looks like you level up for every 25 problems you solve.
Yeah, you gain a level every twenty-five problems you solve, the maximum level being fifteen; you're also able to gain awards, eg. solving ten consecutive problems gains you the "Decathlete" award, though the only award I've gained thus far is:
Project Euler Wrote:
Baby Steps: Solve three problems
![[Image: Baby%20Steps.png]](https://dl.dropbox.com/u/36186411/iDevGames/Baby%20Steps.png)
Mark Bishop
Post: #8
The first rule of these problems is definitely, get a bignum library, or a language with one built in...
Post: #9
Haha. I'm surprised you guys haven't heard of it:
Here's my code: 97156062452226_f98c8789267e769bdb1749698506fc21
I think I have a source code file where I solved a few problems a while back.. Going to go find it.
Here's my code: 97156062452226_f98c8789267e769bdb1749698506fc21
I think I have a source code file where I solved a few problems a while back.. Going to go find it.
Post: #10
For those of you following along at home, OS X's default Ruby has a horrible bug with the Fixnum->Bignum transition which will give incorrect results for a large range of computations.
So if 19**15 gives you a negative number, this is why:
http://stackoverflow.com/questions/12009...g-answers/
and here's a horrific workaround I found:
So if 19**15 gives you a negative number, this is why:
http://stackoverflow.com/questions/12009...g-answers/
and here's a horrific workaround I found:
Code:
# OS X's ruby has bugs with multiplications which fall into signed ranges of the
# underlying type of Fixnum
# hack around this.
def to_bignum(x)
# there has to be a better way to do this :|
0xfffffffffffffffff.coerce(x)[0]
end
def big_pow(a, b)
a = to_bignum(a)
r = 1
b.times do
r = to_bignum(r) * a
end
r
end
