NIST

breadth-first search

(algorithm)

Definition: Any search algorithm that considers neighbors of a vertex, that is, outgoing edges of the vertex's predecessor in the search, before any outgoing edges of the vertex. Extremes are searched last. This is typically implemented with a queue.

Aggregate child (... is a part of or used in me.)
queue.

See also depth-first search, best-first search.

Note: In a tree, equivalent to a level-order traversal.

Author: PEB

More information

Lecture notes from Design and Analysis of Algorithms on Breadth-first search and depth-first search. An animation (Java).


Go to the Dictionary of Algorithms and Data Structures home page.

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Entry modified 10 February 2017.
HTML page formatted Tue Jan 16 10:34:44 2018.

Cite this as:
Paul E. Black, "breadth-first search", in Dictionary of Algorithms and Data Structures [online], Vreda Pieterse and Paul E. Black, eds. 10 February 2017. (accessed TODAY) Available from: https://www.nist.gov/dads/HTML/breadthfirst.html