Course Schedule II

Question 1

Course Schedule II

• 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 of courses and a list of prerequisite pairs, return the ordering of courses you should take to finish all courses.
• There may be multiple correct orders, you just need to return one of them. If it is impossible to finish all courses, return an empty array.

Answer 1