Hi all,
Code Golf's 12th challenge has just been added to the site. It asks you to calculate the first 1,000 digits of Pi - Something I'm sure most of you have thought about, but never done. You can see the challenge at :
http://codegolf.com/1000-digits-of-pi
For those who haven't heard of codegolf.com, it can be described as "allowing you to show off your code-fu by trying to solve coding problems using the least number of keystrokes."
The site currently supports Perl, PHP, Python and Ruby with Scheme to (hopefully) follow soon. Your entries are automatically executed and scored - No need to wait for someone to validate your code.
Other challenges include implementing the Vigenere Cipher, Prime factors, SHA-256 Hashing as well as the obvious 99 Bottles Of Beer. All of the challenges are competitive but there is still scope to well in them, even if you're new to the site.
I hope some of you will find this interesting, and sorry for disturbing you if not!
Have fun,
Carl.
Darn it! They blocked my attempt to use open-uri. How's a guy suppose to cheat with these restrictions. Sheesh!
James Edward Gray II
require"open-uri";puts"3."+open("http://www.joyofpi.com/pi.html"\).read.gsub(/\s/,"")[/\d{1000}/]
···
On Sep 18, 2006, at 5:33 AM, Carl Drinkwater wrote:
Hi all,
Code Golf's 12th challenge has just been added to the site. It asks you to calculate the first 1,000 digits of Pi - Something I'm sure most of you have thought about, but never done. You can see the challenge at :
http://codegolf.com/1000-digits-of-pi
Another blocked cheat! These people clearly do not appreciate cheating as they should. 
James Edward Gray II
#!ruby -rbigdecimal -rbigdecimal/math
include BigMath;puts"3."+BigDecimal.PI(t=1000).to_s[3,t]
···
On Sep 18, 2006, at 5:33 AM, Carl Drinkwater wrote:
Hi all,
Code Golf's 12th challenge has just been added to the site. It asks you to calculate the first 1,000 digits of Pi - Something I'm sure most of you have thought about, but never done. You can see the challenge at :
http://codegolf.com/1000-digits-of-pi
Code golfing is not for me, yet watching others do is very amusing.
So when will the submitted entries be open to public ?
-Martin
···
On Mon, Sep 18, 2006 at 07:33:57PM +0900, Carl Drinkwater wrote:
(...)
I hope some of you will find this interesting, and sorry for disturbing
you if not!
idk James, that might change it from an exercise in code-fu into an
exercise in who-has-the-shortest-domain-name-fu..
Anyone have any idea how they're safely running the code on the server?
Freaky freaky sandbox action?
-Harold
···
On 9/18/06, James Edward Gray II <james@grayproductions.net> wrote:
On Sep 18, 2006, at 5:33 AM, Carl Drinkwater wrote:
> Hi all,
>
> Code Golf's 12th challenge has just been added to the site. It
> asks you to calculate the first 1,000 digits of Pi - Something I'm
> sure most of you have thought about, but never done. You can see
> the challenge at :
>
> http://codegolf.com/1000-digits-of-pi
Darn it! They blocked my attempt to use open-uri. How's a guy
suppose to cheat with these restrictions. Sheesh!
James Edward Gray II
require"open-uri";puts"3."+open("http://www.joyofpi.com/
pi.html").read.gsub(/\s/,"")[/\d{1000}/]
Hi,
http://codegolf.com/1000-digits-of-pi
Darn it! They blocked my attempt to use open-uri. How's a guy suppose to cheat with these restrictions. Sheesh!
We wouldn't want to make it too easy for you!
require"open-uri";puts"3."+open("http://www.joyofpi.com/pi.html"\).read.gsub(/\s/,"")[/\d{1000}/]
Believe it or not, someone is 30-odd bytes better than that and he's (presumably) actually calculating the digits!
Regards,
Carl.
Indeed they should appreciate it...
Crypto-gram: September 15, 2006 - Schneier on Security
John Carter Phone : (64)(3) 358 6639
Tait Electronics Fax : (64)(3) 359 4632
PO Box 1645 Christchurch Email : john.carter@tait.co.nz
New Zealand
"We have more to fear from
The Bungling of the Incompetent
Than from the Machinations of the Wicked." (source unknown)
···
On Mon, 18 Sep 2006, James Edward Gray II wrote:
Another blocked cheat! These people clearly do not appreciate cheating as they should.
James Edward Gray II
#!ruby -rbigdecimal -rbigdecimal/math
include BigMath;puts"3."+BigDecimal.PI(t=1000).to_s[3,t]
They are still discussing it on their forums, but I just looked today
and tried out the 99 bottles of beer. I have the shortest Ruby (202
bytes), but I am only tied for 10th place overall. The best Perl entry
is kicking my butt at 176 bytes. I think this is probably due to the
slightly more verbose string interpolation in Ruby, but I am
interested in what could be done to further shrink my script:
@a='#{n} bottle#{n>1?:s:""} of beer'
@b=" on the wall"
(n=99).times{puts eval"\"#@a#@b, #@a.\n\#{n-=1;n<1?(n=99;'Go to the
store and buy some more'):'Take one down and pass it around'},
#@a#@b.\n\n\""}
pth
···
On 9/18/06, Martin S. Weber <Ephaeton@gmx.net> wrote:
On Mon, Sep 18, 2006 at 07:33:57PM +0900, Carl Drinkwater wrote:
> (...)
> I hope some of you will find this interesting, and sorry for disturbing
> you if not!
Code golfing is not for me, yet watching others do is very amusing.
So when will the submitted entries be open to public ?
-Martin
Haha, ever the cheater, James Gray!
···
On 9/18/06, James Edward Gray II <james@grayproductions.net> wrote:
On Sep 18, 2006, at 5:33 AM, Carl Drinkwater wrote:
> Hi all,
>
> Code Golf's 12th challenge has just been added to the site. It
> asks you to calculate the first 1,000 digits of Pi - Something I'm
> sure most of you have thought about, but never done. You can see
> the challenge at :
>
> http://codegolf.com/1000-digits-of-pi
Darn it! They blocked my attempt to use open-uri. How's a guy
suppose to cheat with these restrictions. Sheesh!
James Edward Gray II
require"open-uri";puts"3."+open("http://www.joyofpi.com/
pi.html").read.gsub(/\s/,"")[/\d{1000}/]
Hi Harold,
Anyone have any idea how they're safely running the code on the server?
Freaky freaky sandbox action?
No, Freaky freaky jail-and-chroot action - We can support pretty much any language that way. I might finally get round to writing an article about how we're doing it, but I've been saying that for months, so I wouldn't hold my breath!
Regards,
Carl.
Hi Patrick,
They are still discussing it on their forums, but I just looked today
and tried out the 99 bottles of beer. I have the shortest Ruby (202
bytes), but I am only tied for 10th place overall. The best Perl entry
is kicking my butt at 176 bytes. I think this is probably due to the
slightly more verbose string interpolation in Ruby, but I am
interested in what could be done to further shrink my script:
Very good attempt! Unfortunately, the shortest Ruby is 186 bytes, but both people who have got that score have better solutions in Perl, so their Ruby entries don't show on the Overall Leaderboard. (Each language is scored individually as well as there being an overall leaderboard.)
@a='#{n} bottle#{n>1?:s:""} of beer'
@b=" on the wall"
(n=99).times{puts eval"\"#@a#@b, #@a.\n\#{n-=1;n<1?(n=99;'Go to the
store and buy some more'):'Take one down and pass it around'},
#@a#@b.\n\n\""}
You can save three bytes by including a literal newline instead of \n :
http://pastie.caboo.se/13961
I'm sure you can shave more bytes of it!
Regards,
Carl.
I got a 64 bytes version now, based on the "tiny c program" from
http://www.boo.net/~jasonp/pipage.html
And it does calculate the digits, although i'm not yet sure how 
I don't care much for these rankings, so what would be a nice time to
post this without spoiling it for others?
···
On 9/18/06, Carl Drinkwater <carl@carldr.com> wrote:
(presumably) actually calculating the digits!
i tried that too. i figure they've munged $:, but a concerted effort to use
load absolute_path_to_open_uri_rb
may get it.
-a
···
On Wed, 20 Sep 2006, Leslie Viljoen wrote:
On 9/18/06, James Edward Gray II <james@grayproductions.net> wrote:
On Sep 18, 2006, at 5:33 AM, Carl Drinkwater wrote:
> Hi all,
>
> Code Golf's 12th challenge has just been added to the site. It
> asks you to calculate the first 1,000 digits of Pi - Something I'm
> sure most of you have thought about, but never done. You can see
> the challenge at :
>
> http://codegolf.com/1000-digits-of-pi
Darn it! They blocked my attempt to use open-uri. How's a guy
suppose to cheat with these restrictions. Sheesh!
James Edward Gray II
require"open-uri";puts"3."+open("http://www.joyofpi.com/
pi.html").read.gsub(/\s/,"")[/\d{1000}/]
Haha, ever the cheater, James Gray!
--
in order to be effective truth must penetrate like an arrow - and that is
likely to hurt. -- wei wu wei
Wow, ya'll are good code golfers! Of the few challenges I've been able
to solve so far, my solutions are much bigger than the winners (about
in the middle from smallest to largest). I guess I'm not gonna be the
Tiger Woods of code golfing. My best effort on the 99 bottles challenge
is 243 bytes 
i="%d bottle%s of beer"
j=" on the wall"
k="\nTake one down and pass it around, "
l="\nGo to the store and buy some more, "
99.downto(1){|x|m=x-1>0?[k,x-1]:[l,99];n=i%[x,(:s if x>1)];
puts n+j+', '+n+'.'+m[0]+i%[m[1],(:s if m[1]>1)]+j+".\n\n"}
Regards,
Jordan
Hey Jordan,
Wow, ya'll are good code golfers! Of the few challenges I've been able
to solve so far, my solutions are much bigger than the winners (about
in the middle from smallest to largest). I guess I'm not gonna be the
Tiger Woods of code golfing. My best effort on the 99 bottles challenge
is 243 bytes
i="%d bottle%s of beer"
j=" on the wall"
k="\nTake one down and pass it around, "
l="\nGo to the store and buy some more, "
99.downto(1){|x|m=x-1>0?[k,x-1]:[l,99];n=i%[x,(:s if x>1)];
puts n+j+', '+n+'.'+m[0]+i%[m[1],(:s if m[1]>1)]+j+".\n\n"}
I tell you what though, if obfuscated code were the aim, you would surely win! I like the use of :s to get the "s" to pluralise the bottle, I'm sure I could use that somewhere.
I don't know what tips to give you really, other that your code doesn't need to be that complicated! Stick in there though, it takes a bit of a mindset change to golf.
C.
Carl Drinkwater wrote:
I tell you what though, if obfuscated code were the aim, you would
surely win!
Hehe! You should see some of my javascript bookmarklets! It's kind of
fun to break all the rules of good programming though.
I like the use of :s to get the "s" to pluralise the
bottle, I'm sure I could use that somewhere.
I actually gipped that from Patrick's code above (i.e., the ternary in
@a).
I don't know what tips to give you really, other that your code doesn't
need to be that complicated! Stick in there though, it takes a bit of a
mindset change to golf.
Thanks! I don't think I'm clever enough to beat most of the folks, but
it's fun to try.
Regards,
Jordan
