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 <= A.length <= 1000 1 <= A[0].length <= 1000
public class Solution {
public int[][] Transpose(int[][] A) {
var res = new int[A[0].Length][];
for(int i=0;i<A[0].Length;i++){
res[i]=new int[A.Length];
}
for(int i=0;i<A.Length;i++){
for(int j=0;j<A[i].Length;j++){
res[j][i]=A[i][j];
}
}
return res;
}
}Time Complexity: O(n*m)
Space Complexity: O(m*n)
