[LeetCode] Toeplitz Matrix 托普利兹矩阵

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[LeetCode] Toeplitz Matrix 托普利兹矩阵

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…

Leetcode刷题C#版之Toeplitz Matrix

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…

【LEETCODE】45、766. Toeplitz Matrix

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…

766. Toeplitz Matrix - LeetCode

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 =…

LeetCode: Spiral Matrix II 解题报告-三种方法解决旋转矩阵问题

Spiral Matrix IIGiven 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 ]] SOLUTION 1: 还是与上一题Spiral Matrix类似…

Toeplitz matrix 与 Circulant matrix

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. ⎡⎣⎢⎢⎢⎢⎢⎢⎢⎢⎢⎢…