题目描述:
给定一个矩阵 A
, 返回 A
的转置矩阵。
矩阵的转置是指将矩阵的主对角线翻转,交换矩阵的行索引与列索引。
示例:
示例 1:
输入:[[1,2,3],[4,5,6],[7,8,9]]
输出:[[1,4,7],[2,5,8],[3,6,9]]
示例 2:
输入:[[1,2,3],[4,5,6]]
输出:[[1,4],[2,5],[3,6]]
提示:
1 <= A.length <= 1000
1 <= A[0].length <= 1000
我提交的代码:
class Solution {
public:
vector<vector<int>> transpose(vector<vector<int>>& A) {
int rows = A.size();
int cols = A[0].size();
int i, j;
vector<vector<int>> result;
for (i = 0; i < cols; ++i){
vector<int> temp;
for (j = 0; j < rows; ++j){
temp.push_back(A[j][i]);
}
result.push_back(temp);
}
return result;
}
};