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rto

Tue Nov 25, 2008 3:50 pm


randomizing

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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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Insectoid

Tue Nov 25, 2008 4:09 pm


RE:randomizing

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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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OneOffDriveByPoster

Tue Nov 25, 2008 4:31 pm


Re: RE:randomizing

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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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Horus

Tue Nov 25, 2008 10:47 pm


RE:randomizing

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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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Sur_real

Mon Dec 08, 2008 7:10 pm


Re: randomizing

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There are so many you mean
(sorry, just can't help myself)


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Tony

Mon Dec 08, 2008 7:20 pm


Re: RE:randomizing

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What, that's it?
there's so many random function is java.
There are so many random functions in Java.

 :wink:


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Sur_real

Tue Dec 09, 2008 10:45 am


RE:randomizing

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lol didn't notice that...


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[Gandalf]

Tue Dec 09, 2008 4:41 pm


RE:randomizing

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Question's already been answered thoroughly, locked.