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What is the primary difference between Dijkstra's algorithm and the A* search al

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Question: What is the primary difference between Dijkstra\'s algorithm and the A* search algorithm?

Options:

  1. A* uses heuristics, Dijkstra\'s does not
  2. Dijkstra\'s is faster than A*
  3. A* can only be used on trees
  4. Dijkstra\'s algorithm is recursive

Correct Answer: A* uses heuristics, Dijkstra\'s does not

Solution: 

The primary difference is that A* uses heuristics to guide its search, while Dijkstra\'s algorithm does not use any heuristics and explores all paths equally.

What is the primary difference between Dijkstra's algorithm and the A* search al

Practice Questions

Q1
What is the primary difference between Dijkstra's algorithm and the A* search algorithm?
  1. A* uses heuristics, Dijkstra's does not
  2. Dijkstra's is faster than A*
  3. A* can only be used on trees
  4. Dijkstra's algorithm is recursive

Questions & Step-by-Step Solutions

What is the primary difference between Dijkstra's algorithm and the A* search 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 by exploring all possible paths equally.
  • Step 2: Understand what A* search algorithm does. It also finds the shortest path but uses a heuristic to estimate the distance to the goal, which helps it prioritize certain paths over others.
  • Step 3: Identify the key difference. Dijkstra's algorithm treats all paths the same and does not use any estimates, while A* uses heuristics to make smarter choices about which paths to explore first.
  • Step 4: Conclude that the primary difference is that A* is guided by heuristics, making it potentially faster in finding the shortest path compared to Dijkstra's algorithm.
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