예제 #1
0
 /**
  * @param BinaryTree $node
  * @return BinaryTree
  */
 private function deleteNeitherChildIsNull(BinaryTree $node)
 {
     $value = $node->inOrderPredecessor()->value();
     $node->setLeft($this->removeRecursive($value, $node->left()));
     $node->setValue($value);
     return $node;
 }