public static int[] transToStartEnd(int pageNo, int pageSize) {
		final int start = getStart(pageNo, pageSize);
		return new int[]{start, getEndByStart(start, pageSize)};
	}
@Test
	public void transToStartEndTest() {
		final int[] startEnd1 = PageUtil.transToStartEnd(0, 10);
		assertEquals(0, startEnd1[0]);
		assertEquals(10, startEnd1[1]);

		final int[] startEnd2 = PageUtil.transToStartEnd(1, 10);
		assertEquals(10, startEnd2[0]);
		assertEquals(20, startEnd2[1]);
	}