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  #46  
Old 04-06-2008, 02:35 PM
Chompy Chompy is offline
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Quote:
Originally Posted by Horrified View Post
Pffft!

Graal Script Code:
3/
Dumb noobs.
o.o hmm?


oh, and when is exercise 4 coming? And could 4 have two difficults? One simplier and one harder?
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  #47  
Old 04-11-2008, 01:59 PM
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Quote:
Originally Posted by Tolnaftate2004 View Post
Give us pseudocode, then.
I got it working O(1) but forget sharing with you guys!

the previous is a lie but I'm tempted to make something ridiculous like O(n!) and declare it O(1) and laugh @ noobs who believe it
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  #48  
Old 04-22-2008, 09:53 AM
Tolnaftate2004 Tolnaftate2004 is offline
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Okay, well this thread has been dead for sufficiently long time. Here is what I came up with; it takes quadratic time.

Graal Script Code:
function onCreated() {
  
temp.getpatterns("THISISATESTSTRING");
  for (
temp.stemp.p) {
    if (
this.(@"h_"@temp.s) >= 2)
      echo(
temp.": "this.(@"h_"@temp.s));
    
this.(@"h_"@temp.s) = 0/* clean-up */
  
}
}

function 
getpatterns(s) {
  
temp.s.length();
  for (
temp.i=0temp.i<temp.l-1temp.i++) {
    
temp.s.charat(temp.i);
    for (
temp.j=temp.i+1;temp.j<temp.l;temp.j++) {
      
temp.@= s.charat(temp.j);
      
this.(@"h_"@temp.c) ++;
      
temp.pat.add(temp.c);
    }
  }
  return 
temp.pat;

Perhaps there are still improvements to be made.
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Last edited by Tolnaftate2004; 04-23-2008 at 11:45 PM..
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  #49  
Old 04-22-2008, 10:35 AM
Inverness Inverness is offline
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Maybe try doing it in a language that doesn't allow you to dynamically create new variables.
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  #50  
Old 04-22-2008, 06:35 PM
Tolnaftate2004 Tolnaftate2004 is offline
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Quote:
Originally Posted by Inverness View Post
Maybe try doing it in a language that doesn't allow you to dynamically create new variables.
So I would use a hash, and it would still run in quadratic time. Also, the instructions say we're making this as efficient as possible in graal script.
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Killa Be: when i got that locker in 6th grade the only thing in it was a picture of a midget useing a firehose :/
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  #51  
Old 04-22-2008, 10:04 PM
cbk1994 cbk1994 is offline
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Quote:
Originally Posted by Tolnaftate2004 View Post
Okay, well this thread has been dead for sufficiently long time. Here is what I came up with; it takes quadratic time.

Graal Script Code:
function onCreated() {
  
temp.getpatterns("THISISATESTSTRING");
  for (
temp.stemp.p) {
    if (
this.(@"h_"@temp.s) >= 2)
      echo(
temp.": "this.(@"h_"@temp.s));
    
this.(@"h_"@temp.s) = 0/* clean-up */
  
}
}

function 
getpatterns(s) {
  
temp.s.length();
  
temp.pat.clear();
  for (
temp.i=0temp.i<temp.l-1temp.i++) {
    
temp.s.charat(temp.i);
    for (
temp.j=temp.i+1;temp.j<temp.l;temp.j++) {
      
temp.@= s.charat(temp.j);
      
this.(@"h_"@temp.c) ++;
      
temp.pat.add(temp.c);
    }
  }
  return 
temp.pat;

Perhaps there are still improvements to be made.
There are always improvements to be made, unless Stefan makes it, in which case it must be perfect.
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  #52  
Old 04-22-2008, 10:28 PM
Programmer Programmer is offline
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Quote:
Originally Posted by cbkbud View Post
There are always improvements to be made, unless Stefan makes it, in which case it must be perfect.
Even Stefan makes mistakes. You should see Kingdoms Debug and Zone Debug xD
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  #53  
Old 04-23-2008, 02:12 AM
Tolnaftate2004 Tolnaftate2004 is offline
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Quote:
Originally Posted by cbkbud View Post
There are always improvements to be made...
This can be disproved.
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  #54  
Old 04-23-2008, 07:28 AM
Inverness Inverness is offline
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Quote:
Originally Posted by cbkbud View Post
There are always improvements to be made
Maybe for you, considering your level of skill, but the same does not go for others.
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  #55  
Old 04-23-2008, 01:08 PM
cbk1994 cbk1994 is offline
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Quote:
Originally Posted by Inverness View Post
Maybe for you, considering your level of skill, but the same does not go for others.
Yes, I have so much skill, it cannot be controlled.

THE POWER OF THE SUN IN THE CHRIS.
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  #56  
Old 04-23-2008, 11:56 PM
Tolnaftate2004 Tolnaftate2004 is offline
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I think it is feasible to shrink time to ~ aN + O(N log N). How might we go about doing this? How do we get a logarithmic factor in our order? How can this help us speed up our algorithm?

This post points out a pitfall in computing the algorithm efficiency. The questions above and this problem are related. How can we minimize the effects of substring()?
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Killa Be: when i got that locker in 6th grade the only thing in it was a picture of a midget useing a firehose :/

Last edited by Tolnaftate2004; 04-24-2008 at 12:16 AM..
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