Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Perl Card Shuffle - Calling up a library file

Posted on 2008-10-28
3
Medium Priority
?
1,130 Views
Last Modified: 2008-10-29
I have created a card shuffling script in perl. It shuffles up the deck and prints the top 5 cards. Now I'm being asked to remove the code that does the shuffling and include it as another function of a library file I've already create  "obj13-lib.pl". Here's what should take place. After the first "hand" is dealt, call the shuffling function again before dealing another, different hand.

Here's the code for my card shuffling program.

#!/usr/bin/perl

@startingdeck = ("A H","2 H","3 H","4 H","5 H","6 H","7 H","8 H",
                 "9 H","10 H","J H","Q H","K H",
                 "A D","2 D","3 D","4 D","5 D","6 D","7 D","8 D",
                 "9 D","10 D","J D","Q D","K D",
                 "A C","2 C","3 C","4 C","5 C","6 C","7 C","8 C",
                 "9 C","10 C","J C","Q C","K C",
                 "A S","2 S","3 S","4 S","5 S","6 S","7 S","8 S",
                 "9 S","10 S","J S","Q S","K S");
for my $x(0..99){
     my@shuffle=(
        shift(@startingdeck),
        pop(@startingdeck),
        shift(@startingdeck),
        pop(@startingdeck),
        shift(@startingdeck),
        pop(@startingdeck),
        shift(@startingdeck),
        pop(@startingdeck),
);
   push@startingdeck, @shuffle;
}
   print"@startingdeck [0..4]\n";




0
Comment
Question by:l1nuxxx
  • 2
3 Comments
 
LVL 39

Expert Comment

by:Adam314
ID: 22822976
This sounds like homework... Experts are not allowed to do your homework.  

This page might be helpful:
http://perldoc.perl.org/perlsub.html
0
 

Author Comment

by:l1nuxxx
ID: 22823319
I understand....
what I have done so far is I removed
for my $x(0..99){
     my@shuffle=(
        shift(@startingdeck),
        pop(@startingdeck),
        shift(@startingdeck),
        pop(@startingdeck),
        shift(@startingdeck),
        pop(@startingdeck),
        shift(@startingdeck),
        pop(@startingdeck),
);
   push@startingdeck, @shuffle;
}
   print"@startingdeck [0..4]\n";
from the card shuffling program.
I added the code above to a file called "obj13-lib.pl. My card shuffling program is named obj13-1.pl. I added to line "require obj13-lib.pl" to the obj13-1.pl file. When I type ./obj13-1.pl all if prints our is the first five cards. It does not shuffle.
0
 
LVL 39

Accepted Solution

by:
Adam314 earned 500 total points
ID: 22824800
There are several ways to do this... this is what I'd recommend:

Have the main program define a deck of cards, as you have.
Have the library file have a function that takes as input a deck of cards, and returns a shuffled deck of cards.
See the perlsub documentation for more on how to have a function get input and return values.
Have the main program call the shuffling function, getting a shuffled deck.  Remove/print out 5 cards.
Have the main program call the shuffling function again - if you want to shuffle only the remaining cards, pass the output from the previous function call.  If you want to start with a new deck, pass the original deck.  Remove/print out 5 cards.
0

Featured Post

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

On Microsoft Windows, if  when you click or type the name of a .pl file, you get an error "is not recognized as an internal or external command, operable program or batch file", then this means you do not have the .pl file extension associated with …
A year or so back I was asked to have a play with MongoDB; within half an hour I had downloaded (http://www.mongodb.org/downloads),  installed and started the daemon, and had a console window open. After an hour or two of playing at the command …
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below. https://filedb.experts-exchange.com/incoming/2017/03_w12/1151775/Permutations.txt https://filedb.experts-exchange.com/incoming/201…

971 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question