ejercicio 4 tp1

using System;
using System.Collections.Generic;
using System.Collections;
using System.Linq;
using System.Text;

namespace ejercicio4
{
    class Program
    {
        static void Main(string[] args)
        {
            ArrayList array = new ArrayList();
            int num;
            char resp;
            bool validar;
            do
            {
                do
                {
                    Console.WriteLine("Ingrese un numero: ");
                    validar = Int32.TryParse(Console.ReadLine(), out num);
                    if (!validar)
                        Console.WriteLine("Ops, intentelo de nuevo");
                } while (!validar);
                array.Add(num);
                Console.WriteLine("Seguir ingresando? s/n");
                resp = char.Parse(Console.ReadLine());
            }while (resp != 'n'&&resp != 'N');
            Console.Clear();
            mostrar(array);
            Console.WriteLine("El promedio es {0}", Math.Truncate(promedio(array)*100)/100);
            Console.WriteLine("Hay {0} numero/s menor/es al promedio", menores(array));
            Console.ReadKey();
        }

        static double promedio(ArrayList a)
        {
            double sum = 0;
            foreach (int n in a)
                sum = sum + n;
            return (sum / a.Count);
        }

        static int menores(ArrayList b)
        {
            int min = 0;
            foreach (int n in b)
                if (n < promedio(b))
                    min = min + 1;
            return min;
        }

        static void mostrar(ArrayList c)
        {
            Console.WriteLine("Numeros ingresados: ");
            foreach (int n in c)
                Console.WriteLine(n);
        }
    }
}