Restrictive Move Solving

[joey]

My code also won't put two of the same characters in a row. So it won't print R then R. It does checks for that!

 

[Johannes91]

Ok, if you want to see short code then here's mine:

print+('R','U')[$_&1],('','\'','2')[int rand3],' 'for(0..24);

The original program is more useful, because it gives 20 scrambles every time you press Enter. But this works, too. 61 characters.

 

[joey]

Hmm, Johanness that gives me the same scramble every time. Thats wierd.

 

[Johannes91]

There's something wrong with your computer, then, if it's giving same random numbers every time.

 

[joey]

Its the 'int rand3', because rand3 is null it gives 0 all the time. If I change it to 'int rand 3', it works!

The $_&1 is clever, I'm trying to think of how I can do that in Ruby.

Here we go:

$><<(0..24).map{|x|%w(R U)[x&1]+"#{%w(' 2)[rand 2]} "}

54 characters.

 

[Johannes91]

Does your code ever give R or U, or just R' U2 R2 U' etc.? And does it print the scramble? Sorry, I don't know Ruby at all so I'm just guessing from the code.


Edit: 41

print+($_&1?R:U).qw(' 2)[rand 3]for 0..24

 

[joey]

Yes it gives R and U aswell, and it does print the scramble.

I'm sure ubuntu has it on default.

I was waiting for you to change ('R','U')to qw(R U)!

Edit: 46 characters

24.times{|x|$><<%w(R U)[x&1]<<%w(' 2)[rand 3]}

 

[Johannes91]

bash: ruby: command not found

I installed Ruby 1.8, and it's working now. I see you just changed [rand 2] to [rand 3], that gives also R and U. I'm sure you can't beat my 41, Perl is just better!

 

[joey]

Perl, as everyone knows, is a golfers best tool!

Before I had: "#{%w(' 2)[rand 2]} "

If "%w(' 2)[rand 2]" was nil (or null in perl), it would just give a blank space. But since were now giving out scramble without spacees, ie RUR', rather than R U R'. I could remove all that and just do "%w(' 2)[rand 3]".

 

[dChan]

Which is easier to learn C++ or Java? And do they have a specific area of interest(one is better for games, other is better for application type stuff?).

I actually was going to learn C/C++ a while back because I wanted to code for the PSP(there's a huge hacker base there, just check pspupdates.qj.net). So I would think that C is better for me to learn.

 

[ExoCorsair]

Originally posted by dChan@May 14 2007, 05:32 PM
Which is easier to learn C++ or Java? And do they have a specific area of interest(one is better for games, other is better for application type stuff?).

I very rarely use Java. Although my application of programming only extends to programming competitions now, I almost always prefer C++ over it.

Java is used a lot for internet applications, C++ is used more for other programs. An example is Mangos (World of Warcraft server).

 

[Cubinator]

Originally posted by dChan@May 14 2007, 05:32 PM
Which is easier to learn C++ or Java? And do they have a specific area of interest(one is better for games, other is better for application type stuff?).

I actually was going to learn C/C++ a while back because I wanted to code for the PSP(there's a huge hacker base there, just check pspupdates.qj.net). So I would think that C is better for me to learn.

Easier to learn? Depends. Some people say C++ is quite hard to start out with; I disagree. I started out with C++ and didn't have much trouble.

Specific areas of interest? Let's see...Java is pretty much for web applications (though you can make standalone applications with it too). C/C++ works for just about everything outside of the web. Drawing things is a pain in C++ with Windows. Most commercial games are written in C++ with DirectX (which is very confusing for a beginner). Just a few notes.

I'd recommend C++.

 

[Cubinator]

<?
$end = array(' ', '2 ', '\' ');
for ($i=0; $i<25; $i++)
{
($i%2 == 0) ? $next = "R" : $next = "U";
 $next .= $end[rand(0,2)];
echo $next;
}
?>

Can't think of a way to make this any shorter besides renaming variables and taking out whitespace. Ah well...it's shorter than my original php code, anyway.

Edit: Actually, I take that back; here's some shorter code:

<?
$end = array(' ', '2 ', '\' ');
for ($i=0; $i<25; $i++)
{echo ($i%2 == 0) ? "R" : "U";
echo $end[rand(0,2)];}
?>

I know there's some simple way to combine the two echo's, but can't see how :unsure: