public void __()
{
int[,] matrix = { { 1, 2, 3, 4 }, { 5, 6, 7, 8 }, { 9, 10, 11, 12 }, { 13, 14, 15, 16 } };
matrix.Checkv1();
int[,] expected = { { 13, 9, 5, 1 }, { 14, 10, 6, 2 }, { 15, 11, 7, 3 }, { 16, 12, 8, 4 } };
CollectionAssert.AreEqual(matrix, expected);
}
