Solution: Bus Routes
Explore how to solve the Bus Routes problem by building an adjacency list linking stations to bus routes. Learn to apply Breadth-First Search (BFS) to find the shortest path in terms of buses ridden from a source to a destination station. Understand the use of queues and visited sets to efficiently navigate routes and determine when no valid path exists.
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Statement
You are given an array, routes, representing bus routes where routes[i] is a bus route that the bus repeats forever. Every route contains one or more ...