Matrix Transpose

Title: Transpose MatrixSource: leetcode.com

Code to return transpose of a matrix.

Given a matrix A, return the transpose of A.

The transpose of a matrix is the matrix flipped over it’s main diagonal, switching the row and column indices of the matrix.

Example 1:

Input: [[1,2,3],[4,5,6],[7,8,9]]
Output: [[1,4,7],[2,5,8],[3,6,9]]

Example 2:

Input: [[1,2,3],[4,5,6]]
Output: [[1,4],[2,5],[3,6]]

Python solution

''' https://leetcode.com/problems/transpose-matrix/ '''

class Solution(object):
    def transpose(self, A):
        """
        :type A: List[List[int]]
        :rtype: List[List[int]]
        """
        rows = len(A)
        cols = len(A[0])
        output = []
        b = [0 for i in range(rows)]
        for i in range(cols):

            for j in range(rows):
                b[j] = A[j][i]
            output.append(b)
            b = [0 for i in range(rows)]

        return output

''' https://leetcode.com/problems/transpose-matrix/ '''

class Solution(object):

def transpose(self, A):

"""

:type A: List[List[int]]

:rtype: List[List[int]]

"""

rows = len(A)

cols = len(A[0])

output = []

b = [0 for i in range(rows)]

for i in range(cols):

for j in range(rows):

b[j] = A[j][i]

output.append(b)

b = [0 for i in range(rows)]

return output

Rate this post

Coddicted

Matrix Transpose

Python solution

Leave a Reply Cancel Reply