| 3 | import java.util.Stack; |
| 4 | |
| 5 | class Node { |
| 6 | public int val; |
| 7 | public List<Node> children; |
| 8 | |
| 9 | public Node() {} |
| 10 | |
| 11 | public Node(int _val) { |
| 12 | val = _val; |
| 13 | } |
| 14 | |
| 15 | public Node(int _val, List<Node> _children) { |
| 16 | val = _val; |
| 17 | children = _children; |
| 18 | } |
| 19 | }; |
| 20 | |
| 21 | class Solution { |
| 22 | public List<Integer> preorder(Node root) { |
nothing calls this directly
no outgoing calls
no test coverage detected