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In Dijkstra's algorithm, what is the purpose of the 'visited' set?
Practice Questions
Q1
In Dijkstra's algorithm, what is the purpose of the 'visited' set?
To store all vertices
To keep track of the shortest path
To avoid processing the same vertex multiple times
To store the distances from the source
Questions & Step-by-Step Solutions
In Dijkstra's algorithm, what is the purpose of the 'visited' set?
Steps
Concepts
Step 1: Understand that Dijkstra's algorithm is used to find the shortest path in a graph.
Step 2: Know that a graph is made up of points called vertices and lines connecting them called edges.
Step 3: When Dijkstra's algorithm runs, it looks at each vertex to find the shortest path to it.
Step 4: The 'visited' set is a list that keeps track of which vertices have already been looked at.
Step 5: By using the 'visited' set, the algorithm can avoid looking at the same vertex again.
Step 6: This helps the algorithm run faster and more efficiently.
No concepts available.
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