Question: 4. [10 marks] Design an algorithm (in pseudocode) to determine whether a DAG (Directed Acyclic Graph) has a unique topological ordering. Your algorithm should return

4. [10 marks] Design an algorithm (in pseudocode) to determine whether

4. [10 marks] Design an algorithm (in pseudocode) to determine whether a DAG (Directed Acyclic Graph) has a unique topological ordering. Your algorithm should return the ordering if a unique one exists or indicate that no unique order exists. The ideal complexity is linear in size of input, i.e. O (n +m)

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