// Create a 2D array in row-major order: the rows of our 2D array are contiguous,
// and the columns are strided
let input_array = vec![ 1, 2, 3,
                        4, 5, 6];

// Treat our 6-element array as a 2D 3x2 array, and transpose it to a 2x3 array
let mut output_array = vec![0; 6];
transpose::transpose(&input_array, &mut output_array, 3, 2);

// The rows have become the columns, and the columns have become the rows
let expected_array =  vec![ 1, 4,
                            2, 5,
                            3, 6];
assert_eq!(output_array, expected_array);