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 <= 10001 <= A[0].length <= 1000class Solution { public int[][] transpose(int[][] A) { if(A==null||A.length==0){ return null; } int [][] result = new int[A[0].length][A.length]; for(int i = 0; i<A.length; i++){ for(int j = 0; j<A[0].length; j++){ result[j][i] = A[i][j]; } } return result; } }
(Easy) Transpose Matrix LeetCode
原文：https://www.cnblogs.com/codingyangmao/p/11387650.html