What is a Fibonacci heap?

Dijkstra Algorithm Questions



80 Short 62 Medium 80 Long Answer Questions Question Index

What is a Fibonacci heap?

A Fibonacci heap is a data structure that supports efficient operations for a priority queue. It is named after the Fibonacci sequence, as it utilizes the properties of Fibonacci numbers to achieve its efficiency. The key feature of a Fibonacci heap is its ability to perform insertions and deletions in constant amortized time, making it particularly useful for algorithms such as Dijkstra's algorithm. It achieves this efficiency by using a combination of binomial trees and a circular, doubly linked list structure. Additionally, a Fibonacci heap has the ability to merge two heaps in constant time, making it suitable for merging heaps during the consolidation step of Dijkstra's algorithm.