binary priority queue

(data structure)

Definition: A priority queue implemented with a binary tree having the following restrictions:

Generalization (I am a kind of ...)
priority queue.

Aggregate child (... is a part of or used in me.)
binary tree, heap property.

See also leftist tree, heap.

Note: The subtree restriction means that when inserting at a leaf, the left subtree is always used before the right subtree. Favoring the left subtree tends to make the tree taller and thinner.

After [GBY91, pages 223-225].

Author: PEB


Gonnet and Baeza-Yates insert (C and Pascal) and delete (C and Pascal)
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Entry modified 16 November 2009.
HTML page formatted Mon Feb 2 13:10:39 2015.

Cite this as:
Paul E. Black, "binary priority queue", in Dictionary of Algorithms and Data Structures [online], Vreda Pieterse and Paul E. Black, eds. 16 November 2009. (accessed TODAY) Available from: