You are given an integer, num_courses, representing the total number of courses you need to complete, labeled from 0 to num_courses - 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] indicates that to take course 1, you have to first take course 0.
Return TRUE if all of the courses can be finished. Otherwise, return FALSE.
Constraints:
You are given an integer, num_courses, representing the total number of courses you need to complete, labeled from 0 to num_courses - 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] indicates that to take course 1, you have to first take course 0.
Return TRUE if all of the courses can be finished. Otherwise, return FALSE.
Constraints: