Comments on: Playing on the CodeGolf Range

By: Frank Spychalski

Frank Spychalski — Tue, 08 Aug 2006 15:18:32 +0000

Finally a working version from Daniel Thanks again

By: Frank Spychalski

Frank Spychalski — Tue, 08 Aug 2006 10:46:16 +0000

I edited your original comment, but it doesn’t work on my machine. Could you mail me your code (to fs at this domain)?

By: Daniel Martin

Daniel Martin — Tue, 08 Aug 2006 10:05:05 +0000

Note that some of my code seems to have been eaten by the submission process - part of that hash literal should read:

{?<,”$a-=1″,?>,”$a+=1″,?+,”x 1″,

By: Frank Spychalski

Frank Spychalski — Tue, 08 Aug 2006 08:34:02 +0000

Thanks for the comments. It’s embarrassing that I have missed Carl’s #3. Daniel thanks for the code - I didn’t think of unpack.map.join to create my program, nice idea… Right now I’m at work but I can’t wait to get home

By: Daniel Martin

Daniel Martin — Tue, 08 Aug 2006 02:58:26 +0000

# 243 bytes, once extraneous newlines are removed (in the big hash literal, commas don't need to be followed by newlines)

def x i=0;$d[$a]=(($d[$a]||0)+i)%256;end
$d=[]
$a=0
$c,$k=STDIN.read.split'!'
eval $c.unpack("C*").map{|i|{?<,"$a-=1",?>,"$a+=1",?+,"x 1",
?-,"x -1",?[,"while x>0 do",?],"end",?.,"print x.chr",
?,,"$d[$a]=$k.slice!(0) or exit"}[i]||''}.join("
")

As a plus, I think it's faster too. edited the code to work around wordpress

By: carldr

carldr — Mon, 07 Aug 2006 22:29:16 +0000

Hi,

Thanks for the blog post, it was really interesting to read the process you’ve gone through to get the solution you have! There are a few clues I’ll give you :

1) You’re on the right track with your last submission.
2) I know no special knowledge of the Brainfuck language.
3) You don’t need any function calls.

I’m sure there are more I can give you, but that would ruin the surprise of finding them! If you’re on IRC, drop by #codegolf on irc.freenode.net - I’m usually round during the day UK time. Or, if you’re not, there will be forums on the Codegolf site within the week. Either way, I’ll try and give you some more hints without ruining the fun. Glad you’re enjoying the site.

Regards,
Carl.