using System;

using System.Collections.Generic;

using System.Linq;

​

public class shoppingList {

    public void display (string[] essential, List<string> regular) {

        int co = 0;

        int unt = 0;

        foreach(var item in essential) {

            co += 1;

            Console.WriteLine(co + ". " + item.ToString());

        }

        if (co < 5) {

            unt = 5 - co;

            Console.WriteLine($"[{unt} slots remaining]");

        } 

        int co1 = 1;

        Console.WriteLine("\nRegular Items (Dynamic)");

        foreach(var item in regular) {

            Console.WriteLine(co1 + ". " + item.ToString());

            co1 += 1;

        } 

    }

    public void searchItem (string[] essential, List<string> regular, string find) {

        int index;

        string found; 

        bool check = regular.Contains(find);

        if (check == true) {

            index = regular.IndexOf(find);

            found = regular[index];

            index += 1;

            Console.Write(find + " was found in 'Regular Items' at " + index + ". " + found + "\n");

        } else {

            index = Array.IndexOf(essential, find);

            found = essential[index];

            index += 1;

            Console.Write(find + " was found in 'Essential Items' at " + index + ". " + found + "\n");

        }

    }

}

​

public class Program

{

    public static void Main()

    {

        // Module 5 

        // Exercise 1

        // Anastasia Salazar 

        // declare essential item array : fixed size of 5 

        string[] essential = { "Bread", "Milk", "Egg" };

        shoppingList s = new shoppingList();

        // declare regular item list : dynamic 

        List<string> regular = new List<string> {"Apples", "Coffee", "Cookies", "Tea"};

        string additem;

        int co = 0;

        // Out put 

        Console.WriteLine("Shopping List Manager");

        Console.WriteLine("---------------------");

        s.display(essential, regular);

        // create menu 

        Console.Write("\nEnter command (1-Add, 2-Remove, 3-Search, 4-Display, 5-Exit): ");

        int choice = Convert.ToInt32(Console.ReadLine());

        // get array size 

​

        while (choice != 5) {

            // add an item 

            if (choice == 1) {

                Console.Write("Add to (1-Essential, 2-Regular): "); 

                int addto = Convert.ToInt32(Console.ReadLine());

                Console.Write("Enter item: ");

                additem = Console.ReadLine();

                // regular vs essential

                if (addto == 1) { //essential array add f

                    Console.WriteLine($"Added to Essential Items!");

                    foreach(var item in essential)

                        co += 1;

                    Console.WriteLine($"{co}");

                    if (co < 5){

                        essential = essential.Append(additem).ToArray();

                        co = 0;

                    }

                    else 

                        Console.Write("\nEssential List is Full\n");

                } else { //regular list add 

                    Console.WriteLine($"Added to Regular Items!");

                    regular.Add(additem);

                }

                Console.WriteLine("\nCurrent Lists: ");

                s.display(essential,regular);

            } 

            // remove item (regular list only) 

            else if (choice == 2) {

                Console.Write("Enter item: ");

                string remove = Console.ReadLine();

                Console.WriteLine("Removing from Regular");

                regular.Remove(remove);

                Console.WriteLine("\nCurrent Lists: ");

                s.display(essential,regular);

            }

            //Search list 

            else if (choice == 3) {

                Console.Write("Enter item: ");

                string find = Console.ReadLine();

                s.searchItem(essential, regular, find);

            }

            //Display List 

            else if (choice == 4) {

                Console.WriteLine("\nCurrent Lists: ");

                s.display(essential, regular);

            }

            // exit 

            else { 

                return;

            }

            Console.Write("\nEnter command (1-Add, 2-Remove, 3-Search, 4-Display, 5-Exit): ");

            choice = Convert.ToInt32(Console.ReadLine());

        }

    }

}