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Consider a Directed Acyclic Graph (DAG). We want to find the shortest path from a source vertex $S$ to all other vertices. Since the graph is a DAG, which approach provides the most efficient time complexity?

  1. Dijkstra's Algorithm
     
  2. Topological Sort followed by relaxation
     
  3. Floyd-Warshall Algorithm
     
  4. Bellman-Ford Algorithm

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For DAGs, processing vertices in topological order allows us to compute shortest paths in linear time.
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