What, that's it?
Horus @ Tue Nov 25, 2008 10:47 pm wrote:
there's so many random function is java.
There are so many random functions in Java.
Computer Science Canada randomizing |
| Author: | rto [ Tue Nov 25, 2008 3:50 pm ] |
| Post subject: | randomizing |
in turing all i would have to do is enter randint(variable, range) but instead java has to be difficult. anybody able to give me the method i would use? i want to be able to have 4 possible choices and java will randomly pick one. (ie. choice a will be referred to '1', choice b will be referred to '2' etc.) any ideas? |
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| Author: | Insectoid [ Tue Nov 25, 2008 4:09 pm ] |
| Post subject: | RE:randomizing |
use Math.random (). This returns a random decimal between 0 and 1. So (int) (Math.random ()*4) will give a random number between 1 and 4 (I think...Haven't used it in a while). (int) will convert the random number to an integer. I don't think it rounds, I think it just cuts off the decimal..Though I may be wrong... |
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| Author: | OneOffDriveByPoster [ Tue Nov 25, 2008 4:31 pm ] |
| Post subject: | Re: RE:randomizing |
insectoid @ Tue Nov 25, 2008 4:09 pm wrote: use Math.random (). This returns a random decimal between 0 and 1. So (int) (Math.random ()*4) will give a random number between 1 and 4 (I think...Haven't used it in a while). (int) will convert the random number to an integer. I don't think it rounds, I think it just cuts off the decimal..Though I may be wrong... The range is [0, 1). So if you have choices in range [1, 4], you need to multiply by 4 to get range [0, 4). Cast to int to get [0, 3] and add one to get [1, 4]. |
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| Author: | Horus [ Tue Nov 25, 2008 10:47 pm ] |
| Post subject: | RE:randomizing |
there's so many random function is java. this is what I use: import java.util.Random; rdmNum=Random.nextInt(x); the range is 0 to x-1 |
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| Author: | Sur_real [ Mon Dec 08, 2008 7:10 pm ] |
| Post subject: | Re: randomizing |
There are so many you mean (sorry, just can't help myself) |
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| Author: | Tony [ Mon Dec 08, 2008 7:20 pm ] |
| Post subject: | Re: RE:randomizing |
What, that's it? Horus @ Tue Nov 25, 2008 10:47 pm wrote: there's so many random function is java.
There are so many random functions in Java. |
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| Author: | Sur_real [ Tue Dec 09, 2008 10:45 am ] |
| Post subject: | RE:randomizing |
lol didn't notice that... |
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| Author: | [Gandalf] [ Tue Dec 09, 2008 4:41 pm ] |
| Post subject: | RE:randomizing |
Question's already been answered thoroughly, locked. |
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