In Dijkstra's algorithm, what data structure is typically used to keep track of the shortest path estimates?
Practice Questions
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Q1
In Dijkstra's algorithm, what data structure is typically used to keep track of the shortest path estimates?
Array
Linked List
Stack
Priority Queue
A priority queue is used to keep track of the shortest path estimates in Dijkstra's algorithm, allowing efficient retrieval of the next vertex with the smallest distance.
Questions & Step-by-step Solutions
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Q
Q: In Dijkstra's algorithm, what data structure is typically used to keep track of the shortest path estimates?
Solution: A priority queue is used to keep track of the shortest path estimates in Dijkstra's algorithm, allowing efficient retrieval of the next vertex with the smallest distance.
Steps: 4
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.
