leetcode 867. 转置矩阵(Transpose Matrix)

目录

  • 题目描述:
  • 示例 1:
  • 示例 2:
  • 解法:

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 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. 1 <= A.length <= 1000
  2. 1 <= A[0].length <= 1000

解法:

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;
    }
};

原文地址:https://www.cnblogs.com/zhanzq/p/10663146.html

时间: 2024-08-07 00:10:55

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