# Find a Topological Ordering of a DAG
solved by 229

## Topological Ordering Problem

*Find a topological ordering of a directed acyclic graph.*

Given: The adjacency list of a graph (with nodes represented by integers).

Return: A topological ordering of this graph.

## Sample Dataset

1 -> 2
2 -> 3
4 -> 2
5 -> 3

## Sample Output

Please login to solve this problem.