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Solution: Course Schedule

Understand how to solve the course schedule problem by exploring topological sorting and depth-first search algorithms. Learn to represent courses and prerequisites as a graph, find courses with zero in-degree, detect cycles, and determine if all classes can be completed. Gain insights on time and space complexity to optimize your approach.

Statement

You are given an integer, numCourses, representing the total number of courses you need to complete, labeled from 0 to numCourses - 1.

You are also given a prerequisites array, where prerequisites[i] = [a[i], b[i]] indicates that you must take course b[i] first if you want to take the course a[i]. For example, the pair [1,0][1, 0] indicates that to take course ...