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Topological sort can be applied to which of the following graphs?

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in Data Structures & Algorithms II by (80.7k points)
Topological sort can be applied to which of the following graphs?

(a) Undirected Cyclic Graphs

(b) Directed Cyclic Graphs

(c) Undirected Acyclic Graphs

(d) Directed Acyclic Graphs

I have been asked this question during a job interview.

The doubt is from Topological Sort topic in section Miscellaneous of Data Structures & Algorithms II

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Correct answer is (d) Directed Acyclic Graphs

Easiest explanation - Every Directed Acyclic Graph has one or more topological ordering whereas Cyclic and Undirected graphs can’t be ordered topologically.

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