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Create an in-order threaded binary search tree and perform the traversals.(Single thread)

CODE:


 #include <iostream>


using namespace std;


// Node structure for the threaded binary search tree

struct Node {

    int data;

    Node* left;

    Node* right;

    bool rightThread; // Indicates if the right pointer is a thread

};


// Function to create a new node

Node* createNode(int data) {

    Node* newNode = new Node();

    newNode->data = data;

    newNode->left = newNode->right = nullptr;

    newNode->rightThread = false;

    return newNode;

}


// Function to insert a node into the threaded binary search tree

void insert(Node*& root, int data) {

    Node* newNode = createNode(data);

    Node* curr = root;

    Node* prev = nullptr;


    while (curr != nullptr) {

        prev = curr;

        if (data < curr->data) {

            if (curr->left != nullptr)

                curr = curr->left;

            else

                break;

        } else {

            if (curr->right != nullptr && !curr->rightThread)

                curr = curr->right;

            else

                break;

        }

    }


    if (prev == nullptr) {

        root = newNode;

    } else if (data < prev->data) {

        newNode->right = prev;

        prev->left = newNode;

    } else {

        newNode->right = prev->right;

        prev->right = newNode;

        prev->rightThread = false;

    }

}


// Function to perform in-order traversal of the threaded binary search tree

void inOrderTraversal(Node* root) {

    Node* curr = root;


    while (curr != nullptr) {

        while (curr->left != nullptr)

            curr = curr->left;


        cout << curr->data << " ";


        if (curr->rightThread)

            curr = curr->right;

        else {

            curr = curr->right;

            if (curr != nullptr)

                cout << curr->data << " ";

        }

    }

}


int main() {

    Node* root = nullptr;


    // Inserting elements into the threaded binary search tree

    insert(root, 5);

    insert(root, 3);

    insert(root, 7);

    insert(root, 2);

    insert(root, 4);

    insert(root, 6);

    insert(root, 8);


    // Performing in-order traversal

    cout << "In-order traversal: ";

    inOrderTraversal(root);

    cout << endl;


    return 0;

}







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