题目要求 A matrix is Toeplitz if every diagonal from top-left to bottom-right has the same element. Now given an M x N matrix, return True if and only if the matrix is Toeplitz. 题目分析及思路 给定一个M x N的矩阵,判断这个矩阵是不是Toeplitz.符合条件的矩阵应满足从左上到右下的每条对角线上的元素都相同.我们可以发现同…

A matrix is Toeplitz if every diagonal from top-left to bottom-right has the same element. Now given an M x N matrix, return True if and only if the matrix is Toeplitz. Example 1: Input: matrix = [   [1,2,3,4],   [5,1,2,3],   [9,5,1,2] ] Output: True…

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 =…

package y2019.Algorithm.array; /** * @ProjectName: cutter-point * @Package: y2019.Algorithm.array * @ClassName: IsToeplitzMatrix * @Author: xiaof * @Description: 766. Toeplitz Matrix * A matrix is Toeplitz if every diagonal from top-left to bottom-ri…

problem 766. Toeplitz Matrix solution1: class Solution { public: bool isToeplitzMatrix(vector<vector<int>>& matrix) { ; i<matrix.size()-; ++i) { ; j<matrix[].size()-; ++j) { ][j+]) return false; } } return true; } }; 参考 1. Leetcode_e…

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 方法一:两两比较 方法二:切片相等 方法三:判断每条对角线 日期 题目地址:https://leetcode.com/problems/toeplitz-matrix/description/ 题目描述 A matrix is Toeplitz if every diagonal from top-left to bottom-right has t…

题目描述: A matrix is Toeplitz if every diagonal from top-left to bottom-right has the same element. Now given an M x N matrix, return True if and only if the matrix is Toeplitz. Example 1: Input: matrix = [[1,2,3,4],[5,1,2,3],[9,5,1,2]] Output: True Exp…

A matrix is Toeplitz if every diagonal from top-left to bottom-right has the same element. Now given an M x N matrix, return True if and only if the matrix is Toeplitz. Example 1: Input: matrix = [   [1,2,3,4],   [5,1,2,3],   [9,5,1,2] ] Output: True…

A matrix is Toeplitz if every diagonal from top-left to bottom-right has the same element. Now given an M x N matrix, return True if and only if the matrix is Toeplitz. Example 1: Input: matrix = [[1,2,3,4],[5,1,2,3],[9,5,1,2]] Output: True Explanati…

［抄题］: A matrix is Toeplitz if every diagonal from top-left to bottom-right has the same element. Now given an M x N matrix, return True if and only if the matrix is Toeplitz. Input: matrix = [[1,2,3,4],[5,1,2,3],[9,5,1,2]] Output: True Explanation: 1…

A matrix is Toeplitz if every diagonal from top-left to bottom-right has the same element. Now given an M x N matrix, return True if and only if the matrix is Toeplitz. Example 1: Input: matrix = [[1,2,3,4],[5,1,2,3],[9,5,1,2]] Output: True Explanati…

题目: Toeplitz Matrix A matrix is Toeplitz if every diagonal from top-left to bottom-right has the same element. Now given an M x N matrix, return True if and only if the matrix is Toeplitz. Example 1: Input: matrix = [[1,2,3,4],[5,1,2,3],[9,5,1,2]]Out…

Given an integer n, generate a square matrix filled with elements from 1 to n2 in spiral order. For example, Given n = 3, You should return the following matrix: [ [ 1, 2, 3 ], [ 8, 9, 4 ], [ 7, 6, 5 ]] 解题思路: 参考Java for LeetCode 054 Spiral Matrix,修改下…

之所以专门定义两个新的概念,在于它们特殊的形式,带来的特别的形式. 1. Toeplitz matrix 对角为常数: n×n 的矩阵 A 是 Toepliz 矩阵当且仅当,对于 Ai,j 有: Ai,j=Ai+1,j+1=ai−j ⎡⎣⎢⎢⎢⎢⎢⎢afghibafghcbafgdcbafedcba⎤⎦⎥⎥⎥⎥⎥⎥ . i−j 表示行号减去列号,对于 n×n 的 Toeplize 矩阵共 2n−1 个不同的值,即 a1−n,a2−n,-,a−1,0,a1,-,an−1. ⎡⎣⎢⎢⎢⎢⎢⎢⎢⎢⎢⎢…

Given an integer n, generate a square matrix filled with elements from 1 to n^2 in spiral order. For example,Given n = 3, You should return the following matrix: [ [ 1, 2, 3 ], [ 8, 9, 4 ], [ 7, 6, 5 ] ] 与 54. Spiral Matrix 类似,这次给定一个整数n,以螺旋顺序填充元素到n^2…

[LeetCode]01 Matrix 解题报告 标签(空格分隔): LeetCode 题目地址:https://leetcode.com/problems/01-matrix/#/description 题目描述: Given a matrix consists of 0 and 1, find the distance of the nearest 0 for each cell. The distance between two adjacent cells is 1. Example:…

//求出4×4矩阵中最大和最小元素值及其所在行下标和列下标,求出两条主对角线元素之和 #include <stdio.h> int main() { int sum=0; int max,min; int max1,max2;//记录最大值的坐标 int min1,min2;//记录最小值的坐标 int i,j; int a[4][4]; //为数组赋值 for(i=0;i<4;i++) { for(j=0;j<4;j++) { scanf("%d",&…

LeetCode:删除排序链表中的重复元素[83] 题目描述 给定一个排序链表,删除所有重复的元素,使得每个元素只出现一次. 示例 1: 输入: 1->1->2 输出: 1->2 示例 2: 输入: 1->1->2->3->3 输出: 1->2->3 题目分析 这道题是链表中的双指针问题,常规思路是定义两个指针,一个slow,一个fast,首先题目已经说明是排序数组,所以所有重复元素都是挨着的,这样子的话我们就要考虑删除多个元素的问题. Java题解…

1. 对角线元素的屏蔽 使用 if + continue 实现对对角线元素的屏蔽 for u in range(n): for v in range(n): if u == v: continue ... 2. 矩阵(二维数组)的遍历方法 遍历方法取决于最内层的操作: 比如一个二维数组的物理意义为: 行表示:以该元素为出发点,到其他元素: 列表示:以该元素为终点,起点为其他任何元素: 因此第一行.第一列为所有与第一个元素相关的元素: for i in range(n): for j in ran…

给定一个排序链表,删除所有含有重复数字的节点,只保留原始链表中 没有重复出现 的数字. 思路和上一题类似(参考 力扣(LeetCode)删除排序链表中的重复元素 个人题解)) 只不过这里需要用到一个前置节点来排除第一个节点就是重复元素的特例. 同样是使用快慢针解决问题.不再详细叙述. 代码如下: class Solution { public ListNode deleteDuplicates(ListNode head) { ListNode ret = new ListNode(0); re…

要求说明: 题目:求一个3*3矩阵对角线元素之和,矩阵的数据用行的形式输入到计算机中 程序分析:利用双重for循环控制输入二维数组,再将 a[i][i] 累加后输出. 实现思路: [二维数组]相关知识: 定义格式 * a 第一种定义格式: * int[][] arr = new int[3][4];//  arr里面包含3个数组   每个数组里面有四个元素 * 上面的代码相当于定义了一个3*4的二维数组,即二维数组的长度为3,二维数组中的每个元素又是一个长度为4的数组 * b 第二种定义格式 *…

这是悦乐书的第312次更新,第333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181题(顺位题号是766).如果从左上角到右下角的每个对角线具有相同的元素,则矩阵是Toeplitz.现在给定一个M×N矩阵,当且仅当矩阵是Toeplitz时返回True.例如: 输入:矩阵= [[1,2,3,4],[5,1,2,3],[9,5,1,2]] 输出:true 说明:在上面的网格中,对角线是:"[9]","[5,5]","[1,1…

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/3748 访问. 如果一个矩阵的每一方向由左上到右下的对角线上具有相同元素,那么这个矩阵是托普利茨矩阵. 给定一个 m * n 的矩阵,当且仅当它是托普利茨矩阵时返回 True. 输入:  matrix = [   [1,2,3,4],   [5,1,2,3],   [9,5,1,2] ] 输出: True 解释:在上述矩阵中, 其对角线为:"[9]",…

A matrix is Toeplitz if every diagonal from top-left to bottom-right has the same element. Now given an M x N matrix, return True if and only if the matrix is Toeplitz. Example 1: Input: matrix = [   [1,2,3,4],   [5,1,2,3],   [9,5,1,2] ] Output: True…

In MATLAB, there is a very useful function called 'reshape', which can reshape a matrix into a new one with different size but keep its original data. You're given a matrix represented by a two-dimensional array, and two positive integers r and c rep…

766. 托普利茨矩阵 如果一个矩阵的每一方向由左上到右下的对角线上具有相同元素,那么这个矩阵是托普利茨矩阵. 给定一个 M x N 的矩阵,当且仅当它是托普利茨矩阵时返回 True. 示例 1: 输入: matrix = [ [1,2,3,4], [5,1,2,3], [9,5,1,2] ] 输出: True 解释: 在上述矩阵中, 其对角线为: "[9]", "[5, 5]", "[1, 1, 1]", "[2, 2, 2]&quo…

Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. click to show follow up. Follow up: Did you use extra space?A straight forward solution using O(mn) space is probably a bad idea.A simple improvement uses O…

Given an integer n, generate a square matrix filled with elements from 1 to n2 in spiral order. For example,Given n = 3, You should return the following matrix: [ [ 1, 2, 3 ], [ 8, 9, 4 ], [ 7, 6, 5 ] ] 题目标签:Array 这道题目和之前的螺旋矩阵几乎没有区别,而且更简单.同样按照螺旋矩阵的特性…

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]. 题目标签:Array 这道题目给了我们一个矩阵,…

leetcode-54. Spiral Matrix - Medium descrition GGiven 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 ret…