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 ] ] class Solution { public: vector<vector<int>…

Spiral Matrix II 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 ] ]   与Spiral Matrix类似:   class So…

Spiral Matrix 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]. 思路: 可参考剑指…

Spiral Matrix II 螺旋矩阵 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 ] ] 看博客园有人面试碰到过这个问题,长篇大论看得我头晕…

Search a 2D Matrix II Write an efficient algorithm that searches for a value in an m x n matrix, return the occurrence of it. This matrix has the following properties: Integers in each row are sorted from left to right. Integers in each column are so…

Spiral Matrix II 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 ] ] 这道题接着上面那道题,是一个逆过程,只要稍微改一下就好了,因…

Write an efficient algorithm that searches for a value in an m x n matrix, return the occurrence of it. This matrix has the following properties: Integers in each row are sorted from left to right. Integers in each column are sorted from up to bottom…

54题是把二维数组安卓螺旋的顺序进行打印,59题是把1到n平方的数字按照螺旋的顺序进行放置 54. Spiral Matrix start表示的是每次一圈的开始,每次开始其实就是从(0,0).(1,1)这种开始的. 用endx.endy来表示每次转圈的x.y方向的终止位置,方便后面进行边界条件设置. 注意:后面start < endx && start < endy.start < endy && start < endx-1都必须同时满足x.y的条…

74. Search a 2D Matrix 整个二维数组是有序排列的,可以把这个想象成一个有序的一维数组,然后用二分找中间值就好了. 这个时候需要将全部的长度转换为相应的坐标,/col获得x坐标,%col获得y坐标 class Solution { public: bool searchMatrix(vector<vector<int>>& matrix, int target) { int row = matrix.size(); ) return false; ].s…

Search a 2D Matrix II 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 in ascending from left to right. Integers in each column are sorted in ascendin…