867 Transpose Matrix - Easy

Problem:

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

Problem Analysis:

• Time Complexity: O(M * N) where M is the number of rows and N is the number of columns
• Space Complexity: O(M * N)

Solutions:

class Solution:
    def transpose(self, matrix: List[List[int]]) -> List[List[int]]:
        return [[matrix[j][i] for j in range(len(matrix))] for i in range(len(matrix[0]))]

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