* @return {boolean} Whether the tree is empty.
()
| 49 | * @return {boolean} Whether the tree is empty. |
| 50 | */ |
| 51 | isEmpty() { |
| 52 | return this.root_ === null; |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * Inserts a node into the tree with the specified key and value if |
no outgoing calls
no test coverage detected