Algorithm Help for Java!

Ok so say I have a region:
- Each Region is 4 Units Wide (Ex: 1-4, 4-8, 8-12, ETC.)
- Say I pick unit 3!
- How would I make it know that Unit 3 belongs to region 1-4 AND be universal to work with any numbers?
A fast response would help a lot!

 

unit / 4
Let integer division do the work for you. Then it'll run from that number * 4 until (number+1) * 4 - 1

 

How would I implement that though :/ Say you are at the cord X = 256 and you place a block down... It then does 256/4 then how can I make it do that rest?

 

frrancis909 Do what exactly? I'm not gonna spoonfeed you code, ya know.

 

xD no like I mean its 64 now how do I make it so it knows what other integers are along in region 64

 

frrancis909 Exactly that ^

 

Or just (X/4) Rounded to the nearest whole number and add 4?

 

frrancis909 Try it out I'd say Just throw it in there and see what the output is.

 

Wait no that does not work :/

Lolmewn I have asked already 3 People on skype and we are all confused :/

this is what we got

It isn't quite working but it needs to be something like this:

int y = 0;
int x = 256;

while(y != (x + 1) * 4 - 1)
{
y++;
}

System.out.println("Answer: " + y);

We also found that alike regions divided have the same main integer so if 24-28 are alike they all have 6.XX

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Mi might be wrong, but I believe what you are looking for is modulo (%):

For example, with 4-wide regions:

Code:

int coordinate = ...;
 
int region = coordinate / 4;
int coordInRegion = coordinate % 4;

For coordinate input 11, it would be region=2, coordInRegion=3.
(note that coordinates 0-3 are in "region 0")

 

We found that this works

[/syntax]

ugh, double answer = 4 * (Math.floor(Math.abs(x / 4)));

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

simply dividing by 4 works... frrancis909

 

Well no then you can't find the region it is in.... and the numbers with the region it is in.

 

Region unit / 4 - unit / 4 + 3 as per your example at first post