4.2 Given a directed graph, design an algorithm to find out whether there is a route between two nodes. LeetCode和CareerCup中关于图的题都不是很多,LeetCode中只有三道,分别是Clone Graph 无向图的复制,Course Schedule 课程清单 和 Course Schedule II 课程清单之二.目前看来CareerCup中有关图的题在第四章中仅此一道,这是…

Given a directed graph, design an algorithm to find out whether there is a route between two nodes. Have you met this question in a real interview? Yes Example Given graph: A----->B----->C \ | \ | \ | \ v ->D----->E for s = B and t = E, return…

Given a directed graph, design an algorithm to find out whether there is a route between two nodes. Have you met this question in a real interview? Yes Example Given graph: A----->B----->C \ | \ | \ | \ v ->D----->E for s = B and t = E, return…

Starting with an undirected graph (the "original graph") with nodes from 0 to N-1, subdivisions are made to some of the edges. The graph is given as follows: edges[k] is a list of integer pairs (i, j, n) such that (i, j) is an edge of the origin…

Given a linked list, swap every two adjacent nodes and return its head.For example,Given 1->2->3->4, you should return the list as 2->1->4->3.Your algorithm should use only constant space. You may not modify the values in the list, only…

Starting with an undirected graph (the "original graph") with nodes from 0 to N-1, subdivisions are made to some of the edges. The graph is given as follows: edges[k] is a list of integer pairs (i, j, n) such that (i, j) is an edge of the origin…

题目链接 https://leetcode.com/contest/weekly-contest-96/problems/reachable-nodes-in-subdivided-graph/ 解题思路 1)题目要求,经过m步后,可以到达的点,等价于求有多少点距离起点的最短距离小于等于m,即这是一个单源最短路径问题,使用djstra算法 复杂度 时间 o(eloge) 空间复杂度o(e). e为边数 本解决方案的注意点 1)计数时,节点和边上的点要分开计数,防止重复计算节点 2)使用优先队列保…

2.只要是由路由去执行的的控制器模块,必须注入到app.js里面进行依赖,在页面上就不需要ng-controller在html页面上写了:   但是如果一个控制器模块,没有经过路由管理:那么就必须要,在页面上使用ng-controller='模块名',来告诉控制器可以管理这部分内容…

Chapter 1. Arrays and Strings 1.1 Unique Characters of a String 1.2 Reverse String 1.3 Permutation String 1.4 Replace Spaces 1.5 Compress String 1.6 Rotate Image 1.7 Set Matrix Zeroes 1.8 String Rotation Chapter 2. Linked Lists 2.1 Remove Duplicates…

Chapter 1. Arrays and Strings 1.1 Unique Characters of a String 1.2 Reverse String 1.3 Permutation String 1.4 Replace Spaces 1.5 Compress String 1.6 Rotate Image 1.7 Set Matrix Zeroes 1.8 String Rotation Chapter 2. Linked Lists 2.1 Remove Duplicates…