In a given 2D binary array A, there are two islands.  (An island is a 4-directionally connected group of 1s not connected to any other 1s.) Now, we may change 0s to 1s so as to connect the two islands together to form 1 island. Return the smallest nu…

原题链接在这里:https://leetcode.com/problems/shortest-bridge/ 题目: In a given 2D binary array A, there are two islands.  (An island is a 4-directionally connected group of 1s not connected to any other 1s.) Now, we may change 0s to 1s so as to connect the tw…

In a given 2D binary array A, there are two islands.  (An island is a 4-directionally connected group of 1s not connected to any other 1s.) Now, we may change 0s to 1s so as to connect the two islands together to form 1 island. Return the smallest nu…

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 DFS + BFS 相似题目 参考资料 日期 题目地址:https://leetcode.com/problems/shortest-bridge/description/ 题目描述 In a given 2D binary array A, there are two islands. (An island is a 4-directionally…

题目如下: In a given 2D binary array A, there are two islands.  (An island is a 4-directionally connected group of 1s not connected to any other 1s.) Now, we may change 0s to 1s so as to connect the two islands together to form 1 island. Return the small…

Given a string s, you are allowed to convert it to a palindrome by adding characters in front of it. Find and return the shortest palindrome you can find by performing this transformation. Example 1: Input: "aacecaaa" Output: "aaacecaaa&quo…

Leetcode之广度优先搜索(BFS)专题-934. 最短的桥(Shortest Bridge) BFS入门详解:Leetcode之广度优先搜索(BFS)专题-429. N叉树的层序遍历(N-ary Tree Level Order Traversal) 在给定的二维二进制数组 A 中,存在两座岛.(岛是由四面相连的 1 形成的一个最大组.) 现在,我们可以将 0 变为 1,以使两座岛连接起来,变成一座岛. 返回必须翻转的 0 的最小数目.(可以保证答案至少是 1.) 示例 1: 输入:[[0…

Design a class which receives a list of words in the constructor, and implements a method that takes two words word1 and word2 and return the shortest distance between these two words in the list. Your method will be called repeatedly many times with…

Given a list of words and two words word1 and word2, return the shortest distance between these two words in the list. For example,Assume that words = ["practice", "makes", "perfect", "coding", "makes"]. G…

This is a follow up of Shortest Word Distance. The only difference is now you are given the list of words and your method will be called repeatedly many times with different parameters. How would you optimize it? Design a class which receives a list…