text: void printTree(BST<int>* root){
      if (root==NULL) {
          return;
      }
      cout<<root->Data<<" :";
      if (root->left != NULL) {
          cout<<"L"<<root->left->Data;
      }
      
      if (root->right != NULL) {
          cout<<" R"<<root->right->Data;
      }
      cout<<endl;
      printTree(root->left);
      printTree(root->right);
  
  }
  