CS61B Guide
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Shortest Paths
We've seen that Breadth-First Search can help us find the shortest path in an unweighted graph, where the shortest path was just defined to be the fewest number of edges traveled along a path. In the following shortest-paths algorithms, we will discover how we can generalize the breadth-first traversal to find the path with the lowest total cost, where the cost is determined by different weights on the edges.
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