When BFS Isn't Enough

BFS layers equal shortest paths only while every edge costs 1 — see why weights break that, and how always expanding the cheapest frontier node (Dijkstra's idea) fixes it.

Complete codeMultiple choice6 exercises, 5 min

AlgoFox Pro

Trees & Graphs is part of AlgoFox Pro

You can read the whole course outline here. The exercises are in the app, along with your streak, your mistake review, and the progress that carries across your devices.

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