Transpose Matrix Problem

Lot of problem we have alreay solved in mathematics,the matrix is the most common problem in provious classes and still now. In this post i try to solve matrix transpose problem programmaticaly.so let try to solve this problem use python programming language.

Example:

 -----------                       ---------
| 2 | 4 | 7 |                      | 2 | 3 |
 -----------  ----- Transpose -- > ---------
| 3 | 5 | 8 |		           | 4 | 5 |
 -----------                       ---------
                                   | 7 | 8 |                            
                                   ---------

if list of list lenght are equal then use this below code

transpose_table = [[2,4,7],[3,5,8]]
x = [list(i) for i in zip(*transpose_table)]
print(x)

Result:

[[2, 3],
 [4, 5],
 [7, 8]]

Simply you can use numpy array to transpose your matrix then you need to install numpy in order to import it Numpy transpose returns similar result when applied on 1D matrix.

import numpy
matrix=[[1,2,3],[4,5,6]] 
print(matrix) 
print("\n") 
print(numpy.transpose(matrix))

Result:

[[1 4]
 [2 5]
 [3 6]]

Custom transpose function we can use if list of list dimension are not equal

m = [[1,2,3],[3,4],[5,6],[1],[],['',2]]
def custom_transpose(m):
	column_max = max([len(i) for i in m])
	modify_list = []
	for i in m:
		x = column_max-len(i)
		if x > 0:
			for add_value in range(x):
				i.append("")
		modify_list.append(i)
	t_list = [list(i) for i in zip(*modify_list)]
	return t_list

t_list = custom_transpose(m)
print(t_list)

Result:
[[1, 3, 5, 1, '', ''], 
[2, 4, 6, '', '', 2], 
[3, '', '', '', '', '']]