| In a directed graph with 7 nodes numbered from 0 to 6: | |
| node 4 should be visited before node 1 | |
| node 4 should be visited before node 2. |
| In a directed graph with 7 nodes numbered from 0 to 6: | |
| node 4 should be visited before node 1 | |
| node 4 should be visited before node 2. |