In a 2D grid of 0s and 1s, we change at most one 0 to a 1. After, what is the size of the largest island? (An island is a 4-directionally connected group of 1s). Example 1: Input: [[1, 0], [0, 1]] Output: 3 Explanation: Change one 0 to 1 and connect…

In a 2D grid of 0s and 1s, we change at most one 0 to a 1. After, what is the size of the largest island? (An island is a 4-directionally connected group of 1s). Example 1: Input: [[1, 0], [0, 1]] Output: 3 Explanation: Change one 0 to 1 and connect…

题目如下: 解题思路:这个题目可以进行拆分成几个子问题.第一,求出island的数量,其实就是 200. Number of Islands,这个很简单,DFS或者BFS都能搞定:第二,除了求出island的数量之外,还要求出每个island包括的1的数量,这个也不难,在DFS或者BFS的过程中计数即可:第三,遍历grid中所有的0,判断每个0的上下左右分别连接了几个不同的island,并将连接的所有island的所有1的数量求和,再加上本身的1(0变来的)即是这个0变成1可以得到的large…

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…

In a 2D grid of 0s and 1s, we change at most one 0 to a 1. After, what is the size of the largest island? (An island is a 4-directionally connected group of 1s). Example 1: Input: [[1, 0], [0, 1]] Output: 3 Explanation: Change one 0 to 1 and connect…

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…

In a string S of lowercase letters, these letters form consecutive groups of the same character. For example, a string like S = "abbxxxxzyy" has the groups "a", "bb", "xxxx", "z" and "yy". Call a…

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…

827. 最大人工岛 在二维地图上, 0代表海洋, 1代表陆地,我们最多只能将一格 0 海洋变成 1变成陆地. 进行填海之后,地图上最大的岛屿面积是多少?(上.下.左.右四个方向相连的 1 可形成岛屿) 示例 1: 输入: [[1, 0], [0, 1]] 输出: 3 解释: 将一格0变成1,最终连通两个小岛得到面积为 3 的岛屿. 示例 2: 输入: [[1, 1], [1, 0]] 输出: 4 解释: 将一格0变成1,岛屿的面积扩大为 4. 示例 3: 输入: [[1, 1], [1, 1]…

在二维地图上, 0代表海洋, 1代表陆地,我们最多只能将一格 0 海洋变成 1变成陆地. 进行填海之后,地图上最大的岛屿面积是多少?(上.下.左.右四个方向相连的 1 可形成岛屿) 示例 1: 输入: [[1, 0], [0, 1]] 输出: 3 解释: 将一格0变成1,最终连通两个小岛得到面积为 3 的岛屿. 示例 2: 输入: [[1, 1], [1, 0]] 输出: 4 解释: 将一格0变成1,岛屿的面积扩大为 4. 示例 3: 输入: [[1, 1], [1, 1]] 输出: 4 解释:…