( sunmao | 2012. 03. 29., cs – 11:41 )

    	ArrayList<Integer> nums = new ArrayList<Integer>();

    	for (int i = 0; i < 90; i++)
    	   nums.add(i+1);
    	
    	
    	Collections.shuffle(nums);
    	
    	for (int i = 0; i < 5; i++)
    		System.out.println(nums.get(i));