# Manhattan

Class for calculation Manhattan distance.

![manhattan](https://upload.wikimedia.org/math/4/c/5/4c568bd1d76a6b15e19cb2ac3ad75350.png "Manhattan Distance")

To calculate distance:

```
$a = [4, 6];
$b = [2, 5];
   
$manhattan = new Manhattan();
$manhattan->distance($a, $b);
// return 3
```