using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        Number5 number5 = new Number5();

        number5.UserInput();

    }

}

​

public class Number5

{

    private List<int> _numbers = new List<int>();

    private int _maxCount = 5;

    public void UserInput()

    {

        Console.WriteLine("5. Write a program that allows user to enter 5 numbers and sort those numbers in increasing and decreasing order. \n");

        _numbers = new List<int>();

        for (int i = 0; i < _maxCount; i++)

        {

            Console.Write("Enter a number: ");

            var input = Console.ReadLine();

            var validatedInput = ValidateInput(input);

            _numbers.Add(Convert.ToInt32(validatedInput));

        }

​

        Print();

    }

​

    private void Print()

    {

        Console.WriteLine("\n");

        Console.WriteLine("Increased Order: ");

        foreach (var num in _numbers.OrderBy(x => x))

        {

            if (num == _numbers.OrderBy(x => x).Last())

                Console.Write(num);

            else

                Console.Write(num + " ");

        }

​

        Console.WriteLine("\n");

        Console.WriteLine("Decreased Order: ");

        foreach (var num in _numbers.OrderByDescending(x => x))

        {

            Console.Write(num + " ");

        }

​

        Console.WriteLine("\n");

    }

​

    private int ValidateInput(string input)

    {

        int x;

        bool isInvalidInput = !int.TryParse(input, out x);

        while (isInvalidInput)

        {

            Console.Write(" - Not a valid number, try again.");

            Console.WriteLine("Enter a number: ");

            input = Console.ReadLine();

            isInvalidInput = !int.TryParse(input, out x);

            if (!isInvalidInput && Convert.ToInt32(input) > 0)

                isInvalidInput = false;

            else

                isInvalidInput = true;

        }

​

        return Convert.ToInt32(input);

    }

}