What is the main disadvantage of Dijkstra's algorithm compared to the A* algorit

Practice Questions

Q1
What is the main disadvantage of Dijkstra's algorithm compared to the A* algorithm?
  1. Dijkstra's algorithm is slower.
  2. Dijkstra's algorithm cannot handle graphs with cycles.
  3. Dijkstra's algorithm does not use heuristics.
  4. Dijkstra's algorithm is less accurate.

Questions & Step-by-Step Solutions

What is the main disadvantage of Dijkstra's algorithm compared to the A* algorithm?
  • Step 1: Understand what Dijkstra's algorithm does. It finds the shortest path from a starting point to all other points in a graph.
  • Step 2: Learn about A* algorithm. A* also finds the shortest path but uses additional information (called heuristics) to guide its search.
  • Step 3: Identify what heuristics are. Heuristics are estimates that help predict the best path to take based on certain criteria.
  • Step 4: Compare the two algorithms. Dijkstra's algorithm explores all possible paths equally, while A* uses heuristics to focus on more promising paths.
  • Step 5: Recognize the disadvantage. Because Dijkstra's algorithm does not use heuristics, it can take longer to find the shortest path in some cases.
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