Transpose Matrix
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
1 2 3 4 5 6 7 8 9
Input
matrix = [[1,2,3],[4,5,6],[7,8,9]]Output
[[1,4,7],[2,5,8],[3,6,9]]The rows and columns are swapped so the first output row contains the first element from each original row, and so on.
Example 2
1 2 3 4 5 6
Input
matrix = [[1,2,3],[4,5,6]]Output
[[1,4],[2,5],[3,6]]The 2 by 3 matrix becomes a 3 by 2 matrix with rows and columns swapped.
Constraints
- m == matrix.length
- n == matrix[i].length
- 1 <= m, n <= 1000
- 1 <= m * n <= 10^5
- -10^9 <= matrix[i][j] <= 10^9