C# Array 1D-2D conversion

csharp_array_conversion.cs

        private static T[,] Make2DArray<T>(T[] input, int height, int width)
        {
            T[,] output = new T[height, width];

            for (int i = 0; i < height; i++)
            {
                for (int j = 0; j < width; j++)
                {
                    output[i, j] = input[i * width + j];
                }
            }

            return output;
        }

        private static T[] Make1DArray<T>(T[,] input)
        {
            var rowCount = input.GetLength(0);
            var colCount = input.GetLength(1);
            T[] output = new T[rowCount * colCount];

            for (int i = 0; i < rowCount; i++)
            {
                for (int j = 0; j < colCount; j++)
                {
                    output[i * rowCount + j] = input[i, j];
                }
            }

            return output;
        }

        [Test]
        public void ShouldReturn2DArrayFrom1DArray()
        {
            var test1DArray = new byte[]
            {
                0, 1, 0,
                1, 0, 1,
                1, 1, 0
            };
            var return2DArray = Make2DArray(test1DArray, 3, 3);
            Assert.IsTrue(test1DArray.SequenceEqual(Make1DArray(return2DArray)));
        }