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Grokking the Coding Interview Patterns in Python

Solution: Course Schedule

Understand how to solve the course schedule problem by exploring topological sort and DFS algorithms. Learn to analyze course dependencies, detect cycles, and determine if completing all courses is possible based on prerequisite relationships.

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Statement

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][1, 0] indicates that to take course ...