In Dijkstra's algorithm, what data structure is primarily used to keep track of

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Question: In Dijkstra\'s algorithm, what data structure is primarily used to keep track of the shortest path estimates?

Options:

Correct Answer: Priority Queue

Solution:

A priority queue is used in Dijkstra\'s algorithm to efficiently retrieve the vertex with the smallest distance estimate.

In Dijkstra's algorithm, what data structure is primarily used to keep track of the shortest path estimates?

In Dijkstra's algorithm, what data structure is primarily used to keep track of the shortest path estimates?

Step 1: Understand that Dijkstra's algorithm is used to find the shortest path in a graph.
Step 2: Recognize that we need a way to keep track of the distances from the starting point to each vertex.
Step 3: Learn that a priority queue is a special data structure that allows us to efficiently get the vertex with the smallest distance.
Step 4: Realize that the priority queue helps us update and retrieve the shortest path estimates as we explore the graph.

Dijkstra's Algorithm – An algorithm used to find the shortest paths from a source vertex to all other vertices in a weighted graph.
Priority Queue – A data structure that allows for efficient retrieval of the minimum (or maximum) element, which is crucial for Dijkstra's algorithm.