Following
blakem's rules,
# 1 2 3
#234567890123456789012345678901234567
$"='';grep{/^(([@_])(?!.*\2))+$/}<D>;
37 characters! I'm pleased with my first try at golfing. ;)
andy.
PS stuffy, good choice of puzzle! There went my lunchtime.
update: 36
#234567890123456789012345678901234567
$"='';grep/^(([@_])(?!.*\2))+$/,<D>;
update 2:
Thanks
dragonchild, 35 w/out the ;
Hmm... you're right about the duplicate letters. I can't remember whether these appear on the t.v. show - I rather suspect they do.
update, later:
This cope with duplicates, but is a lot longer:
# 1 2 3 4 5 6 7
+ 8
#234567890123456789012345678901234567890123456789012345678901234567890
+12345678901
$"='';$n{$_}++for@_;grep/^((??{"([@_])"})(??{"(?!([^$1 ]*$1){$n{$1},})
+"}))+$/,<D>
(you need to
use re 'eval')
I'd rather do:
$"='';$n{$_}++for@_;grep/^(([@_])(??{"(?!([^$1 ]*$1){$n{$1},})"}))+$/,
+<D>
(the difference being that @_ is interpolated normally here), but for some reason this isn't allowed - I get back
Eval-group in insecure regular expression in regex - no idea why, since I'm using re 'eval', and @_ surely can't be tainted?
Going to dinner. andy.
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.