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 take course ...
This questions has 2 parts course schedule 1 (question num 207) and course schedule 2 ( question num 210). I initially wrote a inefficient code for the second part, question 210 and was accepted.
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