1. Problem Descriptions: You have an undirected, connected graph of n nodes labeled from 0 to n - 1. You are given an array graph where graph[i] is a list of all the nodes connected with node i by an edge.Return the length of the shortest path that visits every node. You may sta...
problem:https://leetcode.com/problems/shortest-path-with-alternating-colors/ 周赛题,这道题是带约束的最短路径,我的做法是对不同颜色节点维护两个容器,分别计算从红色结点开始和从蓝色结点开始,取其中最小的。(这道题没有必要用优先队列的,因为是无权的,但是比赛时不知道咋想的) classSolution {public: un...
problem:https://leetcode.com/problems/shortest-path-to-get-all-keys/ 这道题其它地方都挺基础的,就是普通的宽搜,难点主要在于visit状态的维护。 如果不考虑visit数组,则会出现大量重复的来回搜索,比如刚刚从1->2,下一步又从2->1。 但是,已经访问过的地方,有可能再次被访问,比如先取得了钥匙a,因为前面没...
Problem 题目大意:求顶点覆盖的最短路径。 https://leetcode.com/problems/shortest-path-visiting-all-nodes/description/ An undirected, connected graph of N nodes (labeled0, 1, 2, ..., N-1) is given asgraph. graph.length = N, andj != iis in the listgraph[i]exactly once, if and only...
Problem LeetCode In an N by N square grid, each cell is either empty (0) or blocked (1). Aclear path from top-left to bottom-righthas lengthkif and only if it is composed of cellsC_1, C_2, ..., C_ksuch that: Adjacent cellsC_iandC_{i+1}are connected 8-directionally (ie....
3 › [["X","X","X","X","X","X"],["X","*","O","O","O","X"],["X","O","O","#","O","X"],["X","X","X","X","X","X"]] [["X","X","X","X","X"],["X","*","X","O","X"],["X","O","X","#","X"],["X","X","X","X","X...
864. Shortest Path to Get All Keys # 题目 # We are given a 2-dimensional grid. "." is an empty cell, "#" is a wall, "@" is the starting point, ("a", "b", …) are keys, and ("A", "B", …) are locks. We start at the starting point, and one move consists
🏋️ Python / Modern C++ Solutions of All 2407 LeetCode Problems (Weekly Update) - LeetCode-Solutions/Python/shortest-path-with-alternating-colors.py at master · PREETHAM2002/LeetCode-Solutions
这就是迪杰斯特拉算法干的事。 历史:Dijkstra thought about the shortest path problem when working at the Mathematical Center in Amsterdam in 1956 as ...单源最短路径(迪杰斯特拉Dijkstra算法) 求某个源点到其余各顶点的最短路径。 顶点集V分为子集S和子集V-S。 S:包含已确定最短路径的顶点(初始只含...
Shortest Path Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others) 56880 Leetcode: Shortest Word Distance II This is a follow up of Shortest Word Distance...words in the constructor, and implements a method that takes two words word1 and word2 and return...