1
class Solution:
2
    def transpose(self, matrix: List[List[int]]) -> List[List[int]]:
3
        rows = len(matrix)
4
        cols = len(matrix[0])
5
        ans = [[0] * rows] * cols
6
        for i in range(cols):
7
            for j in range(rows):
8
                ans[i][j] = matrix[j][i]
9
        return ans