@Test
public void testBubbleSort() throws Exception {

    int[] origin = SortUtil.initArray(arraySize);
    SortUtil.print(origin);
    long start = System.currentTimeMillis();
    SortUtil.bubbleSort(origin);
    long interval = System.currentTimeMillis() - start;
    System.out.println("call bubbleSort, time cost is: " + interval + "ms");
    SortUtil.print(origin);
}