An undirected, connected graph of N nodes (labeled `0, 1, 2, ..., N-1`) is given as `graph`. graph ...
We are given a dimensional grid . . is an empty cell, isa wall, is the starting point, a , b , ... are keys, and A , B , ... are locks. We start at the starting point, and one move consists of walkin ...
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An undirected, connected graph of N nodes (labeled `0, 1, 2, ..., N-1`) is given as `graph`. graph ...
Consider a directed graph, with nodes labelled 0, 1, ..., n-1. In this graph, each edge is either ...
You are given an m x n integer matrix grid where each cell is either 0 (empty) or 1 (obstacle). Yo ...
Given an n x n binary matrix grid, return the length of the shortest clear path in the matrix. If there is no clear path, return -1. A clear path ...
题目简介:给定一个带权有向图,再给定图中一个顶点(源点),求该点到其他所有点的最短距离,称为单源最短路径问题。 如下图,求点1到其他各点的最短距离 准备工作:以下为该题所需要用到的数据 int N; //保存顶点个数 int M; //保存边个数 int max; //用来设定 ...
LeetCode:访问所有节点的最短路径【847】 题目描述 给出 graph 为有 N 个节点(编号为 0, 1, 2, ..., N-1)的无向连通图。 graph.length = N,且只有节点 i 和 j 连通时,j != i 在列表 graph[i] 中恰好出现一次。 返回 ...
可以走出去的所有路径和最短的路径。 BFS就是以一个起点,配合队列,向四面八方进行搜索,搜过过了就更改 ...
给你一个 m * n 的网格,其中每个单元格不是 0(空)就是 1(障碍物)。每一步,您都可以在空白单元格中上、下、左、右移动。 如果您 最多 可以消除 k 个障碍物,请找出从左上角 (0, 0) 到右下角 (m-1, n-1) 的最短路径,并返回通过该路径所需的步数。如果找不到这样的路径 ...