	@Test
	public void demoTest(){

		int[] values = new int[]{3,7,8,5,2,1,9,5,4};
		
		QuickSort sorter = new QuickSort();

		for (int value : values){
			System.out.print(value + " ");
		}
		System.out.println();
		System.out.println("----------------------------------");
		sorter.sort(values);
		for (int value : values){
			System.out.print(value + " ");
		}
	}