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Solution: Bus Routes

Understand how to apply BFS on a graph constructed from bus routes to determine the minimum number of buses to travel between two stations. This lesson guides you through building adjacency lists, implementing BFS, and analyzing time and space complexity for efficient solutions.

Statement

You are given an array, routes, representing bus routes where routes[i] is a bus route that the ithi^{th} bus repeats forever. Every route contains one or more ...