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Grokking the Coding Interview Patterns

Solution: Course Schedule

Explore how to solve the Course Schedule problem by applying topological sorting and depth-first search techniques. Understand how to represent course prerequisites as a directed graph, track in-degrees, detect cycles, and determine if all courses can be finished. This lesson helps you grasp algorithms to manage dependencies and optimize time and space complexity.

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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 ...