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Val, what IS that vine-looking thing sticking out of the side of your head??

Try rockin' out to Korobeiniki (Music A on the Game Boy cart from god knows how long ago) by Ozma while you and your buddies get in intense multiplayer tournaments that end in violence.

That's ********' Tetris.

xd Rocks your glock, huh?

I would love a Glock. 18C.

I need help. >.<

I have to create a java program that displays all the prime numbers between 1 and 100 for the fourth part of some assignment. All I've got worked out is:

int i;
for (i = 2; i <=100; i++) //one is not a prime
{
if (something that returns true if the number is a prime)
System.out.println(i);
}

Yeah, so... a control variable. GREAT. (Ignore any errors that'd come up in a compiler, it's a fragment and I just typed it up like, now.)

Argh... how can I test whether or not something is a prime number?

Simple method to check if a number is prime

Assume you have a placeholder integer in each execution of your first for loop and a boolean saying that the number is initially prime (X and prime in this case) you can nest a second for loop inside your first one to divide the number by all numbers between 1 and whatever the number is. If ever a modulus value returns 0, you know that the number isn't prime. The code would look as follows


for (int i = 2; i <=100; i++) {
aaaaaboolean prime = true;
aaaaaint x = i;
aaaaafor (int j = 2; j <= x-1; j++) {
aaaaaaaaaaif ( x % j == 0) {
aaaaaaaaaaaaaaaboolean prime = false;
aaaaaaaaaa}
aaaaa}
aaaaaif (prime == true) {
aaaaaaaaaasystem.out.prntln(x);
aaaaa}
}

This is by no means the most effective or efficient way to get the job done, but, it is a simple adaptation of your code to make it work.

P.S. Don't directly copy paste this code, I used the letter A in a white font to make the formatting work. But other than that you're welcome to it. I won't tell ~.^

Edit: Heheh. Whoops! If you checked the code before 1:30 AM Eastern time, I forgot an equals sign in the second for loop signature that was rather critical to the math working out. I've since corrected it and the code is ready for use sweatdrop

Thanks a lot. I can adapt it a little and finish up that stupid assignment.

>.>

Only six more assignments to go, and three more tests, and I'm done with my "self-paced learning" course. I suspect I'll be done in April, and I might spend half of May working on some extra credit stuff (just because I can).

I don't get out of school until June. sweatdrop

Hmm...

Rock, block, sock, dock, crock, knock, Spock, flock, frocke, stock, clock...

That's all I can think of.

Code = Teh confusing.

Uhhh...

AP Exams are going to suck. I'll have four. AP Psychology, AP German Language, AP English Literature, and AP European History.

I'll just have to hope they're all in the same area, or else I'm ********. -.-