Accord.Tests.Math.MatrixTest.TopBottomTest C# (CSharp) Method

        public void TopBottomTest()
        {
            double[] values = { 9, 3, 6, 3, 1, 8, 4, 1, 8, 4, 4, 1, 0, -2, 4 };

            {
                int[] idx = values.Top(5);
                double[] selected = values.Submatrix(idx);
                Assert.AreEqual(5, idx.Length);
                Assert.AreEqual(9, selected[0]);
                Assert.AreEqual(8, selected[1]);
                Assert.AreEqual(8, selected[2]);
                Assert.AreEqual(6, selected[3]);
                Assert.AreEqual(4, selected[4]);
            }

            {
                int[] idx = values.Bottom(5);
                double[] selected = values.Submatrix(idx);
                Assert.AreEqual(5, idx.Length);
                Assert.AreEqual(-2, selected[0]);
                Assert.AreEqual(0, selected[1]);
                Assert.AreEqual(1, selected[2]);
                Assert.AreEqual(1, selected[3]);
                Assert.AreEqual(1, selected[4]);
            }

        }