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Solution: Bus Routes

Explore how to solve the bus routes problem by building an adjacency list to map stations to bus routes, then apply breadth-first search (BFS) to determine the minimum buses required to travel from a source station to a destination. Learn to manage visited routes and optimize for shortest path in an unweighted graph.

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 ...