What is the main disadvantage of Dijkstra's algorithm compared to the A* algorithm?
Practice Questions
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Q1
What is the main disadvantage of Dijkstra's algorithm compared to the A* algorithm?
Dijkstra's algorithm is slower.
Dijkstra's algorithm cannot handle graphs with cycles.
Dijkstra's algorithm does not use heuristics.
Dijkstra's algorithm is less accurate.
The main disadvantage of Dijkstra's algorithm compared to the A* algorithm is that Dijkstra's does not use heuristics, which can lead to longer search times in certain scenarios.
Questions & Step-by-step Solutions
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Q
Q: What is the main disadvantage of Dijkstra's algorithm compared to the A* algorithm?
Solution: The main disadvantage of Dijkstra's algorithm compared to the A* algorithm is that Dijkstra's does not use heuristics, which can lead to longer search times in certain scenarios.
Steps: 5
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.
