# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com' 54: Spiral Matrixhttps://leetcode.com/problems/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 f…

题目 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 ] ] 分析 与54题Spiral Matrix相似题,为一个二维矩阵进行螺旋状赋值 AC代码…

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]. 解题思路: 螺旋阵列,使用up down le…

题目链接:https://leetcode.com/problems/spiral-matrix/description/ Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order. Example 1: Input: [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] Output: [1,2,3,6,9,8,7,…

给出一个 m x n 的矩阵(m 行, n 列),请按照顺时针螺旋顺序返回元素.例如,给出以下矩阵:[ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ]]应该返回 [1,2,3,6,9,8,7,4,5].详见:https://leetcode.com/problems/spiral-matrix/description/ Java实现: class Solution { public List<Integer> spiralOrder(int[][] matrix)…

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]. 分析 螺旋循环输出二维矩阵 AC代码 c…

[ [1, 4, 7, 11, 15], [2, 5, 8, 12, 19], [3, 6, 9, 16, 22], [10, 13, 14, 17, 24], [18, 21, 23, 26, 30] ] 观察,从左到右递增,从上到下递增.似乎找不到什么其他规律.第一想法是二分,笨方法. 感觉这个是有序数组求两个数的和为sum的扩展.巧妙啊!看了题解才会的. 观察左下角或者右下角的元素.所有比18大的,都在18右边.比18小的都在它上边. 只能感叹啊!什么时候能有这样的功力呢? bool se…

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…

1.题目描述 2.分析 使用了一个队列. 3.代码 vector<vector<int>> matrixReshape(vector<vector<int>>& nums, int r, int c) { ].size() != r * c ) return nums; vector<vector<int>> ans; queue<int> q; ; i < nums.size() ;i++ ) ; j &l…

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…