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Show reversing all DAG edges reverses topological order
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Show reversing all DAG
edges reverses topological order
Analyze the show reversing all dag edges reverses topological order.
Examples
Example 1
Input:
"test_input_1"
Output:
"output_1"
Example 2
Input:
"test_input_2"
Output:
"output_2"
Hints
Hint 1
Recall that a topological sort of a DAG is a linear ordering of vertices where for every directed edge (u, v), u comes before v in the ordering.
Hint 2
Consider how reversing all edges in a DAG affects the direction of dependencies between vertices in the graph.
Hint 3
Observe that if the original graph has a topological order, the reversed graph will have the reverse of that order as its topological sort.
Show reversing all DAG edges reverses topological order
Analyze the show reversing all dag edges reverses topological order.