How to generate a random number from an array

Question

How to generate a random number from an array? not out of range.

int n [] = {1,7,3,5,8,10,33,12,18}

+3

Jessy Mar 27 '10 at 0:22

2 answers

In the general case, get a random integer from the minimum value of 0 to the maximum length of the array -1 and use it as the index of the array.

0

kbenson Mar 27 '10 at 0:27

Barthelemy · Accepted Answer · 2010-03-27T00:24:35+0000

import java.util.Random;

...

Random random = new Random();
System.out.println(n[random.nextInt(n.length)]);