algorithmgraphpath-finding# Faster Algorithm than Dijikstra for finding shortest path to all nodes starting from one node

I'm searching for an algorithm that is similar to dijikstra, but faster. I have to solve the same problem - to find the shortest path to all nodes, starting from a given node. But my teacher tod me, I should find a faster algorithm, as dijikstra could be slow. Also i wanted to ask, if i could use Floyd Marshall's algorithm for that task

Solution

Here is a solution to this problem if all arcs are non-negative, otherwise Bellmann-Ford. To get all shortest paths:

- Do a topological sort.
- Breadth-first search from the root and update distances. Done.

Just from **one node v**, start from *v*, instead of your root. In the worst case your node *v* is the root anyways. So time-complexity remains = *O(|V|+|E|)*.

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