LeetCode - Course Schedule IV There are a total of n courses you have to take, labeled from 0 to n-1. Some courses may have direct prerequisites,forexample, to take course 0 you have first to take course 1, which is expressed as a pair: [1,0] Given the total number of courses n...
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
There are a total ofnumCoursescourses you have to take, labeled from0tonumCourses - 1. You are given an arrayprerequisiteswhereprerequisites[i] = [ai, bi]indicates that youmusttake courseaifirst if you want to take coursebi. For example, the pair[0, 1]indicates that you have to take ...
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...
建议和leetcode 210. Course Schedule II 拓扑排序 + HashSet和leetcode 630. Course Schedule III 课程调度 + 贪心算法 一起学习 需要注意的是,由于这道题更新了测试用例所以原先的代码可能出现问题,情况是这样的,记录后继结点要使用vector,不要使用set,因为假如存在(1,9)和(1,9)多次出现,这样就会出现问题,所...
[LeetCode]CourseSchedule 书影博客 题目描述: 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 total number ...
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。
add(n); } } int[] res = new int[numCourses]; int j = 0; while(!zeroQueue.isEmpty()) { Node cur = zeroQueue.poll(); res[j++] = cur.value; for(Node next: cur.next) { next.in--; if(next.in == 0) { zeroQueue.add(next); } } } return j == numCourses ? res: ...
LeetCode 207. Course Schedule This question is actually asking how to check whether a graph has a cycle: 1. Put all nodes and it's next node into a hashmap. e.g 1 -> [2,3] 2. For each node, perform DFS, recursively check if there's a cycle. Create a state array, 0 = not...
630 Course Schedule III 课程表 III Description: 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 be finished before or ...