single-source shortest-path problem

(classic problem)

Definition: Find the shortest paths from a specific source vertex to every other vertex in a weighted, directed graph. Dijkstra's algorithm solves this if all weights are nonnegative. The Bellman-Ford algorithm handles any weights.

See also graph, all pairs shortest path, single-destination shortest-path problem, DAG shortest paths, shortest path.

Note: Equivalent to the single-destination shortest-path problem with all directions reversed.

Author: PEB


See implementations at graph.
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Entry modified 1 February 2005.
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Cite this as:
Paul E. Black, "single-source shortest-path problem", in Dictionary of Algorithms and Data Structures [online], Paul E. Black, ed. 1 February 2005. (accessed TODAY) Available from: