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// Online Java Compiler
// Use this editor to write, compile and run your Java code online

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class StringListOperations {
    public static void main(String[] args) {
        List<String> stringList = new ArrayList<>();
        Scanner scanner = new Scanner(System.in);
        int choice;

        do {
            System.out.println("\nMenu:");
            System.out.println("1. Insert a string");
            System.out.println("2. Delete a string");
            System.out.println("3. Display all strings");
            System.out.println("4. Search for a string");
            System.out.println("5. Exit");
            System.out.print("Enter your choice: ");
            choice = scanner.nextInt();
            scanner.nextLine(); // Consume newline

            switch (choice) {
                case 1:
                    System.out.print("Enter a string to insert: ");
                    String insertString = scanner.nextLine();
                    stringList.add(insertString);
                    System.out.println("String inserted successfully!");
                    break;
                case 2:
                    System.out.print("Enter the index of the string to delete: ");
                    int deleteIndex = scanner.nextInt();
                    if (deleteIndex >= 0 && deleteIndex < stringList.size()) {
                        String deletedString = stringList.remove(deleteIndex);
                        System.out.println("Deleted string: " + deletedString);
                    } else {
                        System.out.println("Invalid index. No string deleted.");
                    }
                    break;
                case 3:
                    System.out.println("Strings in the list:");
                    for (String s : stringList) {
                        System.out.println(s);
                    }
                    break;
                case 4:
                    System.out.print("Enter a string to search: ");
                    String searchString = scanner.nextLine();
                    if (stringList.contains(searchString)) {
                        System.out.println("String found in the list.");
                    } else {
                        System.out.println("String not found in the list.");
                    }
                    break;
                case 5:
                    System.out.println("Exiting program. Goodbye!");
                    break;
                default:
                    System.out.println("Invalid choice. Please select a valid option.");
            }
        } while (choice != 5);

        scanner.close();
    }
}
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