标签:leetcode pre matrix tco title str vector ref 矩阵
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。
输入:[[1,2,3],[4,5,6],[7,8,9]]
输出:[[1,4,7],[2,5,8],[3,6,9]]
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
class Solution {
public:
vector<vector<int>> transpose(vector<vector<int>>& A) {
int m = A.size();
int n = A[0].size();
vector<vector<int>> res(n, vector<int>(m, 0));
for(int i = 0; i < m; i++){
for(int j = 0; j < n; j++){
res[j][i] = A[i][j];
}
}
return res;
}
};
leetcode 867. 转置矩阵(Transpose Matrix)
标签:leetcode pre matrix tco title str vector ref 矩阵
原文地址:https://www.cnblogs.com/zhanzq/p/10663146.html