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Grokking the Coding Interview Patterns

Sort Items by Groups Respecting Dependencies

Discover how to arrange items into groups by respecting dependency orders with topological sorting. This lesson helps you understand and implement solutions to dependency-based ordering challenges, ensuring group continuity and correct item sequencing.

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Statement

You are given nn items indexed from 00 to n−1n − 1. Each item belongs to 00 or one of m groups, described by the array group, where:

  • group[i] represents the group of the ithi^{th} ...