Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water. Find the maximum area of an island…

这个题使用深度优先搜索就可以直接遍历 DFS递归方法: class Solution { public: vector<vector<,},{,-},{,},{,}}; int maxAreaOfIsland(vector<vector<int>>& grid) { ; ].size(); ;i<m;i++){ ;j<n;j++){ ) continue; ; dfs(grid,cnt,i,j); res=res>cnt?res:cnt; }…

Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water. Find the maximum area of an island…

给定一个包含了一些 0 和 1的非空二维数组 grid , 一个 岛屿 是由四个方向 (水平或垂直) 的 1 (代表土地) 构成的组合.你可以假设二维矩阵的四个边缘都被水包围着. 找到给定的二维数组中最大的岛屿面积.(如果没有岛屿,则返回面积为0.) 示例 1: [[0,0,1,0,0,0,0,1,0,0,0,0,0], [0,0,0,0,0,0,0,1,1,1,0,0,0], [0,1,1,0,1,0,0,0,0,0,0,0,0], [0,1,0,0,1,1,0,0,1,0,1,0,0], […

两种方式处理已经访问过的节点:一种是用visited存储已经访问过的1:另一种是通过改变原始数值的值,比如将1改成-1,这样小于等于0的都会停止. Number of Islands 用了第一种方式,Number of Distinct Islands用了第二种方式 200. Number of Islands 时间复杂度o(m*n) 1.这种写法要改变原始输入数组的值 错误版本: 条件判断顺序写错:grid[x][y] == '0' || x < 0 || x >= length || y…

Leetcode之深度优先搜索(DFS)专题-695. 岛屿的最大面积(Max Area of Island) 深度优先搜索的解题详细介绍,点击 给定一个包含了一些 0 和 1的非空二维数组 grid , 一个 岛屿 是由四个方向 (水平或垂直) 的 1 (代表土地) 构成的组合.你可以假设二维矩阵的四个边缘都被水包围着. 找到给定的二维数组中最大的岛屿面积.(如果没有岛屿,则返回面积为0.) 示例 1: [[0,0,1,0,0,0,0,1,0,0,0,0,0], [0,0,0,0,0,0,0,…

Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water. Find the maximum area of an island…

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/3736 访问. 给定一个包含了一些 0 和 1的非空二维数组 grid , 一个 岛屿 是由四个方向 (水平或垂直) 的 1 (代表土地) 构成的组合.你可以假设二维矩阵的四个边缘都被水包围着. 找到给定的二维数组中最大的岛屿面积.(如果没有岛屿,则返回面积为0.) [[0,0,1,0,0,0,0,1,0,0,0,0,0],  [0,0,0,0,0,0,0,1,1…

国庆中秋长假过完,又要开始上班啦.先刷个题目找找工作状态. Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water. Find…

Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water. Find the maximum area of an island…

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:DFS 方法二:BFS 日期 题目地址:https://leetcode.com/problems/max-area-of-island/description/ 题目描述 Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (represen…

Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water. Find the maximum area of an island…

Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water. Find the maximum area of an island…

Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water. Find the maximum area of an island…

题目: Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water. Find the maximum area of an isl…

［抄题］: 求最多的联通的1的数量 Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water. Find the maximum…

Given a 2d grid map of '1's (land) and '0's (water), count the number of islands. An island is surrounded by water and is formed by connecting adjacent lands horizontally or vertically. You may assume all four edges of the grid are all surrounded by…

Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water. Find the maximum area of an island…

转载请注明出处: https://www.cnblogs.com/darkknightzh/p/10493114.html 1. 问题 Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of t…

static int wing=[]() { std::ios::sync_with_stdio(false); cin.tie(NULL); ; }(); class Solution { public: int maxAreaOfIsland(vector<vector<int>>& grid) { int x=grid.size(); ].size(); ; ;i<x;i++) { ;j<y;j++) { res=max(res,countarea(gri…

Max Area 题目描述: 又是这道题,请不要惊讶,也许你已经见过了,那就请你再来做一遍吧.这可是wolf最骄傲的题目哦.在笛卡尔坐标系正半轴(x>=0,y>=0)上有n个点,给出了这些点的横坐标和纵坐标,但麻烦的是这些点的坐标没有配对好,你的任务就是将这n个点的横坐标和纵坐标配对好,使得这n个点与x轴围成的面积最大. 输入: 在数据的第一行有一个正整数m,表示有m组测试实例.接下来有m行,每行表示一组测试实例.每行的第一个数n,表示给出了n个点,接着给出了n个x坐标和y坐标.(给出的x轴的…

转载自:http://www.cnblogs.com/hate13/p/4160751.html Max Area 题目描述:(链接:http://acm.swust.edu.cn/problem/24/) 又是这道题,请不要惊讶,也许你已经见过了,那就请你再来做一遍吧.这可是wolf最骄傲的题目哦.在笛卡尔坐标系正半轴(x>=0,y>=0)上有n个点,给出了这些点的横坐标和纵坐标,但麻烦的是这些点的坐标没有配对好,你的任务就是将这n个点的横坐标和纵坐标配对好,使得这n个点与x轴围成的面积最大…

LintCode 383: Max Area 题目描述 给定 n 个非负整数 a1, a2, ..., an, 每个数代表了坐标中的一个点 (i, ai).画 n 条垂直线,使得 i 垂直线的两个端点分别为(i, ai)和(i, 0).找到两条线,使得其与 x 轴共同构成一个容器,以容纳最多水. 样例 给出[1,3,2], 最大的储水面积是2. Mon Feb 27 2017 思路 第一次看题目还以为是之前写的LintCode 510: Maximal Rectangle,后来发现还是不同的,最…

LeetCode--Max Consecutive Ones Question Given a binary array, find the maximum number of consecutive 1s in this array. Example 1: Input: [1,1,0,1,1,1] Output: 3 Explanation: The first two digits or the last three digits are consecutive 1s. The maximu…

Given a non-empty 2D matrix matrix and an integer k, find the max sum of a rectangle in the matrix such that its sum is no larger than k. Example: Given matrix = [ [1, 0, 1], [0, -2, 3] ] k = 2 The answer is 2. Because the sum of rectangle [[0, 1], […

Find the total area covered by two rectilinear rectangles in a2D plane. Each rectangle is defined by its bottom left corner and top right corner as shown in the figure. Assume that the total area is never beyond the maximum possible value of int. Cre…

Given a non-empty 2D matrix matrix and an integer k, find the max sum of a rectangle in the matrix such that its sum is no larger than k. Example: Given matrix = [ [1, 0, 1], [0, -2, 3] ] k = 2 The answer is 2. Because the sum of rectangle [[0, 1], […

Description:https://leetcode.com/problems/rectangle-area/ public class Solution { public int computeArea(int A, int B, int C, int D, int E, int F, int G, int H) { int area = (C-A)*(D-B) + (G-E)*(H-F); if (A >= G || B >= H || C <= E || D <= F)…

题目描述: Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water. Find the maximum area of an i…

Given n points on a 2D plane, find the maximum number of points that lie on the same straight line. 这道题给了我们一堆二维点,然后让我们求最大的共线点的个数,根据初中数学我们知道,两点确定一条直线,而且可以写成y = ax + b的形式,所有共线的点都满足这个公式.所以这些给定点两两之间都可以算一个斜率,每个斜率代表一条直线,对每一条直线,带入所有的点看是否共线并计算个数,这是整体的思路.但是还有…