Rotate any square matrix clockwise and anticlockwise in any degree.

# Rotate any square matrix clockwise and anticlockwise in any degree of angle.

matrix-rotation is a simple package for rotating elements of any square matrix in clockwise and anticlockwise direction. This rotation can be performed with any degree of angle or step size. This version is most suitable for small size matrix.

## How to install the package

pip install matrix-rotation


## How to use it in python code

Following are some of the sample examples to show the use of matrix_rotation package. This package has a function named rotate_matrix which essentially takes input 2 dimensional square matrix as a first argument, degree as a second argument to determine the step size and default clockwise rotation as the final argument. print_rotate_matrix function is just the extension of rotate_matrix function which print the original matrix and rotated matrix on the console. Let's take a look.

>> from matrix_rotation import rotate_matrix, print_rotate_matrix

>>> matrix = [['a', 'b', 'c'],\
['h', 'i', 'd'],\
['g', 'f', 'e']]

>>> rotated_matrix = rotate_matrix(matrix, degree=2, clockwise=True)

>>> rotated_matrix
[['g', 'h', 'a'], ['f', 'i', 'b'], ['e', 'd', 'c']]

>>> rotated_matrix = print_rotate_matrix(matrix, degree=2, clockwise=True)

Original Matrix:
[['a', 'b', 'c'],
['h', 'i', 'd'],
['g', 'f', 'e']]

Clockwise Rotated Matrix with Degree = 2:
[['g', 'h', 'a'],
['f', 'i', 'b'],
['e', 'd', 'c']]
---------------------------------------------

>>> rotated_matrix
[['g', 'h', 'a'], ['f', 'i', 'b'], ['e', 'd', 'c']]


## How to use from command line interface

### matrix_rotation --help

Usage: matrix_rotation [OPTIONS]

Options:
-M, --matrix TEXT           Use to show default examples of matrix rotation.
Otherwise use the input matrix from command
line. Input example : [["a", "b"],["d", "c"]]

-D, --degree INTEGER        Degree of rotation. Can rotate matrix in between
0 degree to 360 degree.  [default: (1)]

-C, --clockwise BOOLEAN     Use True to rotate matrix in a clockwise
direction. False for rotation in anticlockwise
direction.  [default: (True)]

-S, --print_matrix BOOLEAN  Use True to show the result of Original and
Rotated Matrix.  [default: (False)]

--help                      Show this message and exit.


### Calling for python package

matrix_rotation can be directly called without using python3 to work with command line interface.

#### Calling with --matrix or -M

Here default arguments will be degree=1, clockwise=True, print_matrix=False

matrix_rotation --matrix "[['a', 'b'], ['d', 'c']]"
matrix_rotation -M "[['a', 'b'], ['d', 'c']]"


#### Calling with --matrix or -M and degree or -D

Here default arguments will be clockwise=True, print_matrix=False

matrix_rotation --matrix "[['a', 'b'], ['d', 'c']]" --degree 2
matrix_rotation -M "[['a', 'b'], ['d', 'c']]" -D 2


#### Calling with --matrix or -M, degree or -D and clockwise or -C

Here default arguments will be print_matrix=False

matrix_rotation --matrix "[['a', 'b'], ['d', 'c']]" --degree 2 --clockwise False
matrix_rotation -M "[['a', 'b'], ['d', 'c']]" -D 2


#### Calling with --matrix or -M, degree or -D, clockwise or -C and --print_matrix or -S

matrix_rotation --matrix "[['a', 'b'], ['d', 'c']]" --degree 2 --clockwise False --print_matrix True
matrix_rotation -M "[['a', 'b'], ['d', 'c']]" -D 2 -S True


### Calling for doctest:

python3 -m doctest matrix_rotation/matrix_rotation.py


### Calling for sample examples

Use the following command to run sample examples from command line interface:

matrix_rotation


This command will prompt a message in the console. If you want to run sample examples just type None in the console.

Type "None" to display default examples.


Use the following command to run sample examples in the python code:

>>> from matrix_rotation import examples
>>> examples()


### Output of above sample examples

Original Matrix:
[['a', 'b'],
['d', 'c']]

Clockwise Rotated Matrix with Degree = 1:
[['d', 'a'],
['c', 'b']]
---------------------------------------------

Original Matrix:
[['a', 'b'],
['d', 'c']]

Anitclockwise Rotated Matrix with Degree = 1:
[['b', 'c'],
['a', 'd']]
---------------------------------------------

Original Matrix:
[['a', 'b', 'c'],
['h', 'i', 'd'],
['g', 'f', 'e']]

Anitclockwise Rotated Matrix with Degree = 1:
[['b', 'c', 'd'],
['a', 'i', 'e'],
['h', 'g', 'f']]
---------------------------------------------

Original Matrix:
[['a', 'b', 'c', 'd'],
['l', 'm', 'n', 'e'],
['k', 'p', 'o', 'f'],
['j', 'i', 'h', 'g']]

Clockwise Rotated Matrix with Degree = 2:
[['k', 'l', 'a', 'b'],
['j', 'o', 'p', 'c'],
['i', 'n', 'm', 'd'],
['h', 'g', 'f', 'e']]
---------------------------------------------

Original Matrix:
[['a', 'b', 'c', 'd', 'e'],
['p', 'q', 'r', 's', 'f'],
['o', 'x', 'y', 't', 'g'],
['n', 'w', 'v', 'u', 'h'],
['m', 'l', 'k', 'j', 'i']]

Clockwise Rotated Matrix with Degree = 2:
[['o', 'p', 'a', 'b', 'c'],
['n', 'w', 'x', 'q', 'd'],
['m', 'v', 'y', 'r', 'e'],
['l', 'u', 't', 's', 'f'],
['k', 'j', 'i', 'h', 'g']]
---------------------------------------------

Original Matrix:
[['1', '2', '3', '4', '5', '6'],
['20', '21', '22', '23', '24', '7'],
['19', '32', '33', '34', '25', '8'],
['18', '31', '36', '35', '26', '9'],
['17', '30', '29', '28', '27', '10'],
['16', '15', '14', '13', '12', '11']]

Clockwise Rotated Matrix with Degree = 3:
[['18', '19', '20', '1', '2', '3'],
['17', '30', '31', '32', '21', '4'],
['16', '29', '34', '35', '22', '5'],
['15', '28', '33', '36', '23', '6'],
['14', '27', '26', '25', '24', '7'],
['13', '12', '11', '10', '9', '8']]
---------------------------------------------

Original Matrix:
[['1', '2', '3', '4', '5', '6', '7'],
['24', '25', '26', '27', '28', '29', '8'],
['23', '40', '41', '42', '43', '30', '9'],
['22', '39', '48', '49', '44', '31', '10'],
['21', '38', '47', '46', '45', '32', '11'],
['20', '37', '36', '35', '34', '33', '12'],
['19', '18', '17', '16', '15', '14', '13']]

Anitclockwise Rotated Matrix with Degree = 4:
[['5', '6', '7', '8', '9', '10', '11'],
['4', '29', '30', '31', '32', '33', '12'],
['3', '28', '45', '46', '47', '34', '13'],
['2', '27', '44', '49', '48', '35', '14'],
['1', '26', '43', '42', '41', '36', '15'],
['24', '25', '40', '39', '38', '37', '16'],
['23', '22', '21', '20', '19', '18', '17']]
---------------------------------------------



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