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Grokking the Coding Interview Patterns

Course Schedule II

Explore how to use topological sorting to find a valid order for completing courses with given prerequisites. Learn to detect cycles that make scheduling impossible and apply this logic to solve dependency-based problems efficiently in coding interviews.

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Statement

You are given n courses, labeled from 0 to n - 1. Some courses have prerequisites, which are provided as a list of pairs: prerequisites[i] =[a,b]= [a, b]. To take course aa ...