例如,想要学习课程0,你需要先完成课程1,我们用一个匹配来表示:[0,1]。 返回你为了学完所有课程所安排的学习顺序。可能会有多个正确的顺序,你只要返回任意一种就可以了。如果不可能完成所有课程,返回一个空数组。 示例1: 输入:numCourses = 2, prerequisites = [[1,0]]输出:[0,1]解释:总共有 2 门课程。
[LeetCode]Course Schedule 题目:Course Schedule 给定了n各课程[0,n-1]和课程之间的依赖关系,课程i必须先完成课程j,即:课程i依赖于课程j。判断这些课程能否修完。 思路: 这些课程学习过程类似于拓扑排序,终点是要判断课程学习顺序(依赖关系)中是否有环,如果有环,则不能修完全部课程。 课程可以看成点,课程之间...
题目已知,n个课程会被从0至n-1编号 我们需要知道每个课程的入度,可以定义一个preNum数组, preNum[i]:代表i号课程所依赖的课程数 同时在寻找0入度的课程时,我们需要知道某个课程是否已上完,可以定义一个visited数组,visited[i]:表示i号课程已上完 为了寻找0入度课程方便,构造一个getNext()函数,用来寻找入度为...
Can you solve this real interview question? Course Schedule IV - There are a total of numCourses courses you have to take, labeled from 0 to numCourses - 1. You are given an array prerequisites where prerequisites[i] = [ai, bi] indicates that you must ta
你这个学期必须选修numCourses门课程,记为0到numCourses - 1。 在选修某些课程之前需要一些先修课程。 先修课程按数组prerequisites给出,其中prerequisites[i] = [ai, bi],表示如果要学习课程ai则必须先学习课程bi。 例如,先修课程对[0, 1]表示:想要学习课程0,你需要先完成课程1。
题目地址:https://leetcode-cn.com/problems/course-schedule-iv/ 题目描述 你总共需要上n门课,课程编号依次为0到n-1。 有的课会有直接的先修课程,比如如果想上课程0,你必须先上课程1,那么会以[1,0]数对的形式给出先修课程数对。 给你课程总数n和一个直接先修课程数对列表prerequisite和一个查询对列表queri...
210. Course Schedule II # 题目 # There are a total of n courses you have to take, labeled from 0 to n-1. Some courses may have prerequisites, for example to take course 0 you have to first take course 1, which is expressed as a pair: [0,1] Given the to
【Leetcode】Course Schedule II https://leetcode.com/problems/course-schedule-ii/ 题目: There are a total of n courses you have to take, labeled from 0 to n - 1. Some courses may have prerequisites, for example to take course 0 you have to first take course 1, which is expressed as...
630. Course Schedule III # 题目 # There are n different online courses numbered from 1 to n. You are given an array courses where courses[i] = [durationi, lastDayi] indicate that the ith course should be taken continuously for durationi days and must b
There are a total of n courses you have to take, labeled from 0 to n-1.Some courses may have prerequisites, for example to take course 0 you have to first take course 1, which is expressed as a pair…