selecting random elements from an array

Hi

I am sure this is really simple but I cannot work it out, although I have been searching the internet and books on Java

I have the following array and I want to be able to select a random element from it each time the method is called:

public void generateQuestion(){ int[] ranquest = {0,1,2,3,4,5,6}; // generate array to represent indexes of nums array }

I just cannot think of a for loop to do this, so that it does not always pick the same position on the array.

Hope someone can help me with this

Thanks

Why would you need a for loop?

Add this line....

System.out.println(ranquest[(int)(Math.random() * ranquest.length)]);

That should output a random value from the array each time.

Now you could do that or you could call this function that does the same thing.

public static int getRandomIntegerFromArray(int[] integerArray){ int retInt = -1; if (integerArray != null && integerArray.length > 0){ retInt = integerArray[(int)(Math.random()*integerArray.length)]; } return retInt; }

[ August 03, 2005: Message edited by: Richard Anderson ]
[ August 03, 2005: Message edited by: Richard Anderson ]

Thanks very much for your response Richard - appreciate it

I don't know why I thought I needed a for loop either to print one line - having a funny moment(well several hours really!) :roll: