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Grokking the Coding Interview Patterns in Python

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Understand how to solve course scheduling problems by applying topological sort techniques. Learn to order courses respecting prerequisites, identify circular dependencies, and calculate the minimum semesters needed for completion. This lesson equips you with methods to efficiently resolve scheduling constraints common in coding interviews.

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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 ...