troubleshooting Question

randomize array of integers

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-Dman100-Flag for United States of America asked on
JavaSalesforce
8 Comments5 Solutions411 ViewsLast Modified:
I am trying to shuffle an array of 52 integers using the following method:

	public static List<Integer> shuffleArray(Integer[] arr) {
		
		Integer[] randomizedArray = new Integer[]{};
		
		for(Integer i=0; i<arr.size(); i++) {
			Double dbl = math.random() * arr.size();
			randomizedArray.add(dbl.intValue());
		}
		return randomizedArray;
	}

I want to randomize the array so that the integers are out of order and unique.  Right now, the array is randomized, but it is not unique.  I want all the integers to be unique.  I also want to make sure the order of the array is never 0,1,2,3,4,5,6,7...etc...51.

I'm using the Salesforce apex language above, which is a derivative of Java.  I don't have access to the shuffle method and the random object.  I need to accomplish it with the above code structure.

Any help is appreciated.
Thanks.
ASKER CERTIFIED SOLUTION
Peter Kwan
Analyst Programmer

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