Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw
 
PerlMonks  

Re: Re2: Friday Golf: All 2-digit combinations

by hardburn (Abbot)
on Sep 26, 2003 at 14:45 UTC ( #294441=note: print w/ replies, xml ) Need Help??


in reply to Re2: Friday Golf: All 2-digit combinations
in thread Friday Golf: All 2-digit combinations

I'm not so sure about your checker:

$ ./two_digit_combo.pl | perl -ne 'print join " ", sort unpack("A2" x +(length()/2), $_)' 00 01 02 03 04 05 06 07 08 09 11 12 13 14 15 16 17 18 19 22 23 24 25 2 +6 27 28 29 33 34 35 36 37 38 39 44 45 46 47 48 49 55 56 57 58 59 66 6 +7 68 69 77 78 79 88 89 99 $ cat two_digit_combo.pl #!/usr/local/bin/perl for('00'..'99'){$h{$_}++if(!($h{$_}||$h{reverse$_}))}print keys%h $

Clearly, '00' is right at the beginning of the output.

----
I wanted to explore how Perl's closures can be manipulated, and ended up creating an object system by accident.
-- Schemer

Note: All code is untested, unless otherwise stated


Comment on Re: Re2: Friday Golf: All 2-digit combinations
Download Code
Re^4: Friday Golf: All 2-digit combinations
by PhilHibbs (Hermit) on Sep 26, 2003 at 14:52 UTC
    When I run that code: for('00'..'99'){$h{$_}++if(!($h{$_}||$h{reverse$_}))}print keys%h
    I get this: 67330568261704029988180316064455272528015714695907498924003511787948227708461323293936581215473834566637451909
    which is clearly incorrect. It does not contain 10, 20, 41, 42, 43, 50, 53, 62, 75, 76, 85, 86, 91, 96, 97, and it duplicates 03, 15, 17, 27, 29, 32, 40, 45, 46, 51, 52, 56, 61, 66, 70, 73, 74, 80, 81, 82, 90, 93, 98.

      No, it's just out of order, due to the fact that it's printing psudo-random hash keys. You didn't specify that it has to be in order :)

      Run it through my digit-splitter I posted in another thread and you'll see that all the pairs are there.

      Update: Ahh, I see. I have the same problem that LTjake does :(

      ----
      I wanted to explore how Perl's closures can be manipulated, and ended up creating an object system by accident.
      -- Schemer

      Note: All code is untested, unless otherwise stated

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://294441]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others browsing the Monastery: (5)
As of 2014-12-20 11:36 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    Is guessing a good strategy for surviving in the IT business?





    Results (95 votes), past polls