Implement topological sort using DFS, detect cycles
Analyze the implement topological sort using dfs, detect cycles.
Examples
Input: "test_input_1"
Output: "output_1"
Input: "test_input_2"
Output: "output_2"
Hints
Recall that topological sort is only possible for Directed Acyclic Graphs (DAGs). How can you use DFS to detect cycles during the topological sort process?
During DFS, maintain a recursion stack to track nodes currently being visited in the current DFS path. How can this help identify back edges, which indicate cycles?
After detecting a cycle, how can you modify the DFS-based topological sort algorithm to terminate early and return the cycle information instead of continuing the sort?
Implement topological sort using DFS, detect cycles
Analyze the implement topological sort using dfs, detect cycles.