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Grokking the Coding Interview Patterns in C++

Parallel Courses

Explore how to apply topological sort to solve scheduling problems involving course prerequisites. Understand how to find the minimum semesters needed to complete all courses while handling dependencies and detecting impossible cycles.

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Statement

You are designing a course schedule for a university with n courses, labeled from 1 to n. The prerequisite requirements are given in an array, relations, where each relations[i]=[prevCoursei,nextCoursei]\text{relations}[i] = [\text{prevCourse}_i, \text{nextCourse}_i] means that prevCoursei\text{prevCourse}_i ...