Random numbers from 1-10

[shalenzi]

Could somebody please help me in printing the entire whole numbers ffrom 1-10 randomly. I tried the below code, but its not giving me the entire numbers.Instead getting repeated numbers also in o/p . Please somebody help me ASAP.

import java.util.Random;

class random
{
public static void main(String[] args)
{
Random rn = new Random();
for(int i =0; i <10; i++)
{
int answer = rn.nextInt(10) + 1;
System.out.println(answer);
}
}
}

[Panphobia]

Personally I would store the numbers in an array and then check if they have been generated yet, if yes then keep generating if no stop and add to array.

[Raknarg]

Even better would be to start with an array from numbers 1 to 10 and just randomly swap them

code:

for i = 1 to 10:    array[i] = i for i in 1 to 10:    swap array[i] with array[random]

I wrote a test program, this will randomize an array with an even distribution (the number will be in the right position 10% of the time)

[Tony]

Raknarg @ Tue Mar 18, 2014 11:39 am wrote:

this will randomize an array with an even distribution (the number will be in the right position 10% of the time)

It will not. http://blog.codinghorror.com/the-danger-of-naivete/

[Raknarg]

Fair enough, but I tested it out again a little differently and the distribution is still fairly even, with a greater chance of being on it's original section or a couple slots down, and if you go through the list more than once it essentially disappears, although I suppose the Knuth-Fisher-Yates shuffle is still better