## matrix_transposition
### Instructions
- Define the structure matrix as a tuple of 2 tuples of 2 `i32` 's.
- Define a **function** that calculates the transpose matrix of a 2x2 matrix.
- Note:
- The transpose of a matrix `A` is the matrix `A'` where `A'` 's columns are `A` 's row and the rows are the columns:
Example:
```
( a b ) __ transposition __ > ( a c )
( c d ) ( b d )
```
- Matrix must implement Debug, PartialEq and Eq. You can use derive.
- Remember that you are defining a library so you have to make public the elements that are going to be called from an external crate.
### Notions
- [Defining a struct ](https://doc.rust-lang.org/stable/book/ch05-01-defining-structs.html )
- [The Tuple Type ](https://doc.rust-lang.org/stable/book/ch03-02-data-types.html?highlight=accessing%20a%20tuple#compound-types )
- [Tuples ](https://doc.rust-lang.org/rust-by-example/primitives/tuples.html )
- [Tuple Structs without Named Fields ](https://doc.rust-lang.org/stable/book/ch05-01-defining-structs.html?highlight=tuple#using-tuple-structs-without-named-fields-to-create-different-types )
- [Adding Useful Functionality with Derived Traits ](https://doc.rust-lang.org/stable/book/ch05-02-example-structs.html?highlight=debug%20deriv#adding-useful-functionality-with-derived-traits )
- [Chapter 7 ](https://doc.rust-lang.org/stable/book/ch07-03-paths-for-referring-to-an-item-in-the-module-tree.html )
### Expected Function
```rust
pub fn transpose(m: Matrix) -> Matrix {
}
```
### Usage
Here is a posible program to test your function
```rust
use matrix_transposition::transpose;
use matrix_transposition::Matrix;
fn main() {
let matrix = Matrix((1, 3), (4, 5));
println!("Original matrix {:?}", matrix);
println!("Transpose matrix {:?}", transpose(matrix));
}
```
And its output:
```console
$ cargo run
Original matrix Matrix((1, 3), (4, 5))
Transpose matrix Matrix((1, 4), (3, 5))
$
```
