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In which scenario is Dijkstra's algorithm NOT applicable?

Practice Questions

Q1
In which scenario is Dijkstra's algorithm NOT applicable?
  1. When all edge weights are non-negative
  2. When there are negative edge weights
  3. When the graph is directed
  4. When the graph is undirected

Questions & Step-by-Step Solutions

In which scenario is Dijkstra's algorithm NOT applicable?
  • Step 1: Understand what Dijkstra's algorithm is used for. It finds the shortest path in a graph.
  • Step 2: Identify the types of graphs Dijkstra's algorithm can work with. It works with graphs that have non-negative edge weights.
  • Step 3: Recognize what negative edge weights are. They are edges in the graph that reduce the total path cost.
  • Step 4: Realize that if a graph has negative edge weights, Dijkstra's algorithm may not give the correct shortest path.
  • Step 5: Conclude that Dijkstra's algorithm is NOT applicable in scenarios where there are negative edge weights in the graph.
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