programming-challenges/challenges/rotate-2-dimensional-array-90-degrees/README.md

# rotate-2-dimensional-array-90-degrees

Created by [@theoludwig](https://github.com/theoludwig) on 3 December 2021.

## Instructions

Given a square/rectangle matrix representing an image and a direction of rotation (`clockwise` or `anticlockwise`), rotate the image by 90 degrees.

### Input

- **Line 1:** The direction (`clockwise` or `anticlockwise`) of rotation
- **Next Lines:** The matrix of the image

### Output

- **Lines:** The rotated matrix

## Examples

### Example 1

#### Input

```txt
clockwise
1 2 3
4 5 6
7 8 9
```

#### Output

```txt
7 4 1
8 5 2
9 6 3
```

### Example 2

#### Input

```txt
anticlockwise
1 2 3
4 5 6
7 8 9
```

#### Output

```txt
1 4 7
2 5 8
3 6 9
```

See the `test` folder for examples of input/output.