Am I right about the differences between Floyd-Warshall, Dijkstra's and Bellman-Ford algorithms?

You are correct about the first two questions, and about the goal of Floyd-Warshall (finding the shortest paths between all pairs), but not about the relationship between Bellman-Ford and Floyd-Warshall: Both algorithms use dynamic programming to find the shortest path, but FW isn't the same as running BF from each starting node to every other node.

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