Question

In C++ create an implementation a binary search tree

Please use preorder traversal on the following set: { 11, 22,
14, 10, 3, 27 }.

Answer 1

To create a binary search tree in C++, define a Node structure with a constructor, and implement functions to insert elements and perform a preorder traversal. Insert the given set into the BST and use the traversal function to output the tree in preorder.

Step-by-step explanation:

Implementing a Binary Search Tree in C++

To implement a binary search tree (BST) in C++, we'll first define a structure for the nodes and then create functions for inserting nodes and performing a preorder traversal.

Defining the Node Structure:

struct Node {
int data;
Node* left;
Node* right;

Node(int value) : data(value), left(nullptr), right(nullptr) {}
};

Insert Function:

Node* insert(Node* root, int data) {
if (!root) {
return new Node(data);
}
if (data < root->data) {
root->left = insert(root->left, data);
} else if (data > root->data) {
root->right = insert(root->right, data);
}
return root;
}

Preorder Traversal Function:

void preorderTraversal(Node* root) {
if (root) {
cout << root->data << ' ';
preorderTraversal(root->left);
preorderTraversal(root->right);
}
}

For the given set { 11, 22, 14, 10, 3, 27 }, you would insert the elements in the order they're given to build the BST. Once the tree is created, call the preorderTraversal function to print the elements in preorder.