| 1 | // Definition for a binary tree node. |
| 2 | class TreeNode { |
| 3 | constructor(val) { |
| 4 | this.val = val; |
| 5 | this.left = this.right = null; |
| 6 | } |
| 7 | } |
| 8 | |
| 9 | class LevelOrderTraversal { |
| 10 | levelOrder(root) { |
nothing calls this directly
no outgoing calls
no test coverage detected