Given a directed, acyclic graph of N nodes.  Find all possible paths from node 0 to node N-1, and return them in any order. The graph is given as follows:  the nodes are 0, 1, ..., graph.length - 1.  graph[i] is a list of all nodes j for which the ed…

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 回溯法 日期 题目地址:https://leetcode.com/problems/all-paths-from-source-to-target/description/ 题目描述 Given a directed, acyclic graph of N nodes. Find all possible paths from node 0 to n…

题目链接:https://leetcode.com/problems/all-paths-from-source-to-target/description/ Given a directed, acyclic graph of N nodes.  Find all possible paths from node 0 to node N-1, and return them in any order. The graph is given as follows:  the nodes are…

Given a directed, acyclic graph of N nodes.  Find all possible paths from node 0 to node N-1, and return them in any order. The graph is given as follows:  the nodes are 0, 1, ..., graph.length - 1.  graph[i] is a list of all nodes j for which the ed…

题目如下: Given a directed, acyclic graph of N nodes. Find all possible paths from node 0 to node N-1, and return them in any order. The graph is given as follows: the nodes are 0, 1, ..., graph.length - 1. graph[i] is a list of all nodes j for which the…

Given a directed acyclic graph (DAG) of n nodes labeled from 0 to n - 1, find all possible paths from node 0 to node n - 1 and return them in any order.The graph is given as follows: graph[i] is a list of all nodes you can visit from node i (i.e., th…

Given a directed, acyclic graph of N nodes.  Find all possible paths from node 0 to node N-1, and return them in any order. The graph is given as follows:  the nodes are 0, 1, ..., graph.length - 1.  graph[i] is a list of all nodes j for which the ed…

原题链接在这里:https://leetcode.com/problems/all-paths-from-source-lead-to-destination/ 题目: Given the edges of a directed graph, and two nodes source and destination of this graph, determine whether or not all paths starting from source eventually end at de…

Unique Paths II Total Accepted: 31019 Total Submissions: 110866My Submissions Question Solution  Follow up for "Unique Paths": Now consider if some obstacles are added to the grids. How many unique paths would there be? An obstacle and empty spa…

https://oj.leetcode.com/problems/unique-paths-ii/ 图的深搜,有障碍物,有的路径不通. 刚开始想的时候用组合数算,但是公式没有推导出来. 于是用了深搜,递归调用. 但是图最大是100*100,太大了,超时.考虑到在计算(2,1)和(1,2)都用到了(2,2),也就是说有了重复计算.于是记录这些中间的数据. 而有的地方因为有障碍物,所以得的路径值是0,这又要和没有计算做个区分,于是又加了些数据,标志是否已经计算过了. class Solution {…