867. Transpose Matrix - LeetCode】的更多相关文章

Question 867. Transpose Matrix Solution 题目大意:矩阵的转置 思路:定义一个转置后的二维数组,遍历原数组,在赋值时行号列号互换即可 Java实现: public int[][] transpose(int[][] A) { int[][] B = new int[A[0].length][A.length]; for (int i = 0; i < A.length; i++) { for (int j = 0; j < A[0].length; j++…
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 <= A.length <= 1000 1 <= A[0].length <= 1000 思路 新建一个矩阵res,res[i]…
package y2019.Algorithm.array; /** * @ProjectName: cutter-point * @Package: y2019.Algorithm.array * @ClassName: Transpose * @Author: xiaof * @Description: 867. Transpose Matrix * * Given a matrix A, return the transpose of A. * The transpose of a mat…
problem 867. Transpose Matrix solution: class Solution { public: vector<vector<int>> transpose(vector<vector<int>>& A) { ].size(); vector<vector<int>> res(n, vector<int>(m));//err... ; i<m; ++i) { ; j<n;…
作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 先构建数组再遍历实现翻转 日期 题目地址:https://leetcode.com/problems/transpose-matrix/description/ 题目描述 Given a matrix A, return the transpose of A. The transpose of a matrix is the matrix flipp…
题目要求 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. 题目分析及思路 题目要求得到矩阵的转置矩阵.可先得到一个行数与原矩阵列数相等.列数与原矩阵行数相等的矩阵,再对原矩阵进行遍历. python代码​ c…
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]] Ex…
[题干描述] 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.(一矩阵A,返回其转置) [思路] 直接处理,A[i][j]的值赋值给output[j][i]. [python代码] input = [[1, 2…
class Solution: def transpose(self, A: List[List[int]]) -> List[List[int]]: return [list(i) for i in list(zip(*A))]…
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]] Ex…
这是悦乐书的第332次更新,第356篇原创 01看题和准备 今天介绍的是LeetCode算法题中Easy级别的第202题(顺位题号是867).给定矩阵A,返回A的转置. 矩阵的转置是在其主对角线上翻转的矩阵,切换矩阵的行和列索引.例如: 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]] 注意: 1 <= A.length <= 1000 1…
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]] Ex…
问题 该文章的最新版本已迁移至个人博客[比特飞],单击链接 https://www.byteflying.com/archives/3756 访问. 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 <…
1.题目描述 2.题目描述 直接申请内存,转置即可. 3.代码 vector<vector<int>> transpose(vector<vector<int>>& A) { int C = A.size() ; ].size() ; vector<vector<int>> result(R,vector<int>(C) ) ; ; i < A.size() ; i++ ) ; j < A[].size…
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]] Ex…
Given an integer matrix, find the length of the longest increasing path. From each cell, you can either move to four directions: left, right, up or down. You may NOT move diagonally or move outside of the boundary (i.e. wrap-around is not allowed). E…
Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted from left to right. The first integer of each row is greater than the last integer of the previous ro…
Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted from left to right. The first integer of each row is greater than the last integer of the previous ro…
题目: Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order. For example, Given the following matrix: [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] You should return [1,2,3,6,9,8,7,4,5]. 题解: 这道题是实现题. 考虑2个初始…
题目: Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted from left to right. The first integer of each row is greater than the last integer of the previou…
首先介绍题目中要用的4个Shell命令 sed awk head tail的常用方法.(打好地基,才能建成高楼!) sed:(转自:http://www.cnblogs.com/barrychiao/archive/2012/09/27/2706300.html) 1.定位行 sed命令用来处理文本,在处理前首先要找得到待处理的行,这是逻辑上必须的.所以需要首先定位,然后对定位到的各行进行各种处理,包括插入,删除,替换等.sed -n '10p' testfile // sed命令默认会打印出经…
Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order. For example,Given the following matrix: [ [ , , ], [ , , ], [ , , ] ] You should return [1,2,3,6,9,8,7,4,5]. 思路:规律:当我们沿水平方向走完一次(比如从左往右),则下一次水平方向(…
Given a n x n matrix where each of the rows and columns are sorted in ascending order, find the kth smallest element in the matrix. Note that it is the kth smallest element in the sorted order, not the kth distinct element. Example: matrix = [ [ , ,…
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 <= A.length <= 1000 1 <= A[0].length <= 1000 class Solution { public:…
Question 766. Toeplitz Matrix Solution 题目大意: 矩阵从每条左上到右下对角线上的数都相等就返回true否则返回false 思路: 遍历每一行[i,j]与[i+1,j+1]是否相等,不等就返回false,相等就接着遍历,都遍历完了就返回true Java实现: public boolean isToeplitzMatrix(int[][] matrix) { int i = 0; while (i < matrix.length - 1) { int j =…
Question 566. Reshape the Matrix Solution 题目大意:给一个二维数组,将这个二维数组转换为r行c列 思路:构造一个r行c列的二维数组,遍历给出二给数组nums,合理转换原数组和目标数组的行列转换. Java实现: public int[][] matrixReshape(int[][] nums, int r, int c) { int originalR = nums.length; int originalC = nums[0].length; if…
Note: 后面数字n表明刷的第n + 1遍, 如果题目有**, 表明有待总结 Conclusion questions: [LeetCode] questions conclustion_BFS, DFS LeetCode questions conclustion_Path in Tree [LeetCode] questions conlusion_InOrder, PreOrder, PostOrder traversal [LeetCode] questions for Dynamic…
All LeetCode Questions List(Part of Answers, still updating) 题目汇总及部分答案(持续更新中) Leetcode problems classified by company 题目按公司分类(Last updated: October 2, 2017) .   Top Interview Questions # Title Difficulty Acceptance 1 Two Sum Medium 17.70% 2 Add Two N…
数组基础 数组是最基础的数据结构,特点是O(1)时间读取任意下标元素,经常应用于排序(Sort).双指针(Two Pointers).二分查找(Binary Search).动态规划(DP)等算法.顺序访问数组.按下标取值是对数组的常见操作. 相关LeetCode题: 905. Sort Array By Parity  题解 922. Sort Array By Parity II  题解 977. Squares of a Sorted Array  题解 1150. Check If a…
You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Note: You have to rotate the image in-place, which means you have to modify the input 2D matrix directly. DO NOTallocate another 2D matrix and do the…