Given a 2D integer array matrix
, return the transpose of matrix
.
The transpose of a matrix is the matrix flipped over its main diagonal, switching the matrix's row and column indices.
Example 1:
Input: matrix = [[1,2,3],[4,5,6],[7,8,9]]
Output: [[1,4,7],[2,5,8],[3,6,9]]
Example 2:
Input: matrix = [[1,2,3],[4,5,6]]
Output: [[1,4],[2,5],[3,6]]
Constraints:
-
m == matrix.length
-
n == matrix[i].length
-
1 <= m, n <= 1000
-
1 <= m * n <= 105
-
-109 <= matrix[i][j] <= 109
SOLUTION:
class Solution:
def transpose(self, matrix: List[List[int]]) -> List[List[int]]:
m = len(matrix)
n = len(matrix[0])
op = [[-1 for i in range(m)] for j in range(n)]
for i in range(m):
for j in range(n):
op[j][i] = matrix[i][j]
return op
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