@gobalkrishnan/dsa_collection/menu/singly_linked_list_menu.js

Data Structure and Algorthim used to build application

import { input, closeInput } from '../console_io.js';
import { LinkedList } from '../data_structure/linked_list/singly_linked_list.js';

class SinglyLinkedListMenu {
    constructor() {}

    static process_print() {
        console.log("===== Main Menu =====");
        console.log("0. Exit");
        console.log("1. Insert Begin");
        console.log("2. Insert End");
        console.log("3. Insert After");
        console.log("4. Insert Before");
        console.log("5. Delete Begin");
        console.log("6. Delete End");
        console.log("7. Delete After");
        console.log("8. Delete Before");
        console.log("9. Display in JSON");
        console.log("10. Display");
        console.log("11. Delete current value")
    }

    static async process() {
        let start = null;
        let num = null;

        while (num !== '0') {
            this.process_print();

            // Wait for user input
            num = await input("Enter the Option: ");

            switch (num) {
                case '0': // Exit
                    console.log("Exiting the program.");
                    closeInput(); // Close the readline interface here
                    break;

                case '1': // Insert Begin
                    {
                    const data = await input("Enter the Data: ");
                    start = LinkedList.insert_begin(start, data);
                    break;
                    }
                case '2': // Insert End
                {
                    const data = await input("Enter the Data: ");
                    start = LinkedList.insert_end(start, data);
                    break;
                }
                case '3': {
                    const data = await input("Enter the Data: ");
                    const search_data = await input("Enter the Search Value:");
                    start = LinkedList.insert_after(start,search_data,data);
                    break;
                }

                case '4': {
                    const data = await input("Enter the Data: ");
                    const search_data = await input("Enter the Search Value:");
                    start = LinkedList.insert_before(start,search_data,data);
                    break;
                }

                case '5': {
                    start = LinkedList.delete_begin(start);
                    break;
                }

                case '6': {
                    start = LinkedList.delete_end(start);
                    break;
                }

                case '7': {
                    const search_data = await input("Enter the Search Value:");
                    start = LinkedList.delete_after(start,search_data);
                    break;
                }

                case '8': {
                    const search_data = await input("Enter the Search Value:");
                    start = LinkedList.delete_before(start,search_data);
                    break;
                }
                

                case '9':start = LinkedList.display_as_json(start);break;
                case '10': start = LinkedList.display(start);break;
                case '11' : {
                    const search_data = await input("Enter the Search Value:");
                    start = LinkedList.delete(start,search_data);
                    break;
                }

                default:
                    console.log("Invalid option. Please try again.");
                    break;
            }
        }
    }
}

// Run the process method
SinglyLinkedListMenu.process();