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What is the primary data structure used in Dijkstra's algorithm?

Practice Questions

Q1
What is the primary data structure used in Dijkstra's algorithm?
  1. Stack
  2. Queue
  3. Priority Queue
  4. Array

Questions & Step-by-Step Solutions

What is the primary data structure used in Dijkstra's algorithm?
  • Step 1: Understand that Dijkstra's algorithm is used to find the shortest path in a graph.
  • Step 2: Recognize that a graph consists of vertices (nodes) and edges (connections between nodes).
  • Step 3: Realize that Dijkstra's algorithm needs to keep track of the shortest distance to each vertex.
  • Step 4: Learn that a priority queue is a special data structure that allows us to efficiently get the vertex with the smallest distance.
  • Step 5: Understand that the priority queue helps Dijkstra's algorithm to quickly find the next vertex to process.
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