Project Euler

[Serisium]

I've known about this for a while, and currently have 24 problems completed. I just coded a solution for #220 in Java and it's computing right now.
http://projecteuler.net/index.php?se...roblems&id=220

public class Heighway_Dragon {
    static int a,b,x,y;
    public static void main(String[] args) {
    	position(1000000000000l,construct(50));
    }
    
    public static String construct(int i){
    	String current = "Fa";
    	String next;
    	for(int generation=1;generation<=i;generation++){
    		next = "";
    		for(int x=0;x<current.length();x++){
    			switch(current.charAt(x)){
    				case 'a': next+="aRbFR"; break;
    				case 'b': next+="LFaLb"; break;
    				case 'F': next+="F"; break;
    				case 'R': next+="R"; break;
    				case 'L': next+="L"; break;
    			}
    		}
    		current=next;
    	}
    	return current;
    }
    
    public static void position(long pos, String dragon){
    	dragon=dragon.replaceAll("a","");
    	dragon=dragon.replaceAll("b","");
    	int direction=1;
    	while(b<pos){
    		a++;
    		if(dragon.charAt(a)=='F'){
    			if(direction==1)
    				y++;
    			if(direction==2)
    				x++;
    			if(direction==3)
    				y-=1;
    			if(direction==4)
    				x-=1;
    			b++;
    		} else if(dragon.charAt(a)=='L') {
    			direction-=1;
    			if(direction==0)
    				direction=4;
    		} else if(dragon.charAt(a)=='R') {
    			direction+=1;
    			if(direction==5)
    				direction=1;
    		}
    	}
    	System.out.println(x);
    	System.out.println(y);
    }
}

[Freddy]

This is pretty cool. If I wasn't supposed to be doing a test right now and not being online, I'd try some of these today.

For now I'll just bookmark it and start tomorrow.

[game-bot]

Found out that the site isn't blocked on my school's websense. That means I'll actually have something to do in my compsci class, after I finish the entire week's worth of work in 15 minutes...

[Blixinator]

I have 70 problems solved.
Bam.