@Test
public void testGetMedian() {

    double[] list = new double[]{1, 2, 1, 1, 1};
    assertEquals(1, PpeOp.getMedian(list), 1e-10);
    double[] list2 = new double[]{0, 0, 1, 4, 2};
    assertEquals(2, PpeOp.getMedian(list2), 1e-10);
    double[] list3 = new double[]{5, 4, 3, 2, 0};
    assertEquals(3.5, PpeOp.getMedian(list3), 1e-10);
}