Hi !

Can any of java coders provide me a good template for submitting solutions in different online judges ? I always have trouble with StringTokenizer and so on..., maybe you say so forget java ! and code in C++ but I say java is Cool and java coders are different so I want to be different to (despite the fact that language is nothing but a tool and algorithm and problem solving is important as we see in Knuth TAOCP that he uses Assembly !)

Hi, I want to generate bit strings of length n and exactly m ones I came up with this algorithm but can't make it more efficient any Idea ? or am I doing optimization right ?

// cin >> number >> no;
// sample input 3 1 
// smaple output:
// 0 0 1
// 0 1 0
// 1 0 0

int number, nOnes, no;
int solution[10000];

void backtrack(int n) {
	if(n == number) {
		if(nOnes == no)
			print();
	} else {
		int candidates[] = {0, 1};
		for(int i = 0; i < 2; i++)
		{
			if(candidates[i] == 1) {
				nOnes += 1;
				if(nOnes > no){
					nOnes--;
					return;
				}
			}
			solution[n] = candidates[i];
			backtrack(n + 1);
			if(candidates[i])
				nOnes -= 1;
		}
	}
}

Hi

Yesterday I just found this site "jutge.org" and I thought that it's great site for newbies (like me)

my question is , have (has?) anybody participated in this site and solved problems and how he/she evaluates the material of this site ? Does it worth spending a summer solving tasks listed in "Algorithm" course by this website ? Please leave a comment if you have something to say :)