Accord.Tests.Math.MatrixTest.TopBottomTest2 C# (CSharp) Method

        public void TopBottomTest2()
        {
            for (int i = 0; i < 10; i++)
            {
                double[] values = Matrix.Random(20, -1.0, 1.0);

                for (int k = 1; k < 11; k++)
                {
                    double[] actualTop = values.Submatrix(values.Top(k));
                    double[] actualBottom = values.Submatrix(values.Bottom(k));

                    Array.Sort(values);

                    double[] expectedTop = values.Get(values.Length - k, values.Length);
                    double[] expectedBottom = values.Get(0, k);

                    Assert.AreEqual(k, actualTop.Length);
                    Assert.AreEqual(k, actualBottom.Length);
                    Assert.AreEqual(expectedTop.Length, actualTop.Length);
                    Assert.AreEqual(expectedBottom.Length, actualBottom.Length);

                    foreach (var v in actualTop)
                        Assert.IsTrue(expectedTop.Contains(v));

                    foreach (var v in actualBottom)
                        Assert.IsTrue(expectedBottom.Contains(v));
                }
            }

        }