[LeetCode&Python] Problem 867. Transpose Matrix

Posted 2021-01-08 chiyeung

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]]

 

Note:

1. 1 <= A.length <= 1000
2. 1 <= A[0].length <= 1000

class Solution:
    def transpose(self, A):
        """
        :type A: List[List[int]]
        :rtype: List[List[int]]
        """
        
        return [r for r in zip(*A)]