day6.cs

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

namespace ConsoleApp1
{
    internal class Program
    {
        static void Main(string[] args)
        {
//Create list of all fish starting in the list
List<int> listOfFish = new List<int>()
            {
                1,4,1,1,1,1,5,1,1,5,1,4,2,5,1,2,3,1,1,1,1,5,4,2,1,1,3,1,1,1,1,1,1,1,2,1,1,1,1,1,5,1,1,1,1,1,1,1,1,1,4,1,1,1,1,5,1,4,1,1,4,1,1,1,1,4,1,1,5,5,1,1,1,4,1,1,1,1,1,3,2,1,1,1,1,1,2,3,1,1,2,1,1,1,3,1,1,1,2,1,2,1,1,2,1,1,3,1,1,1,3,3,5,1,4,1,1,5,1,1,4,1,5,3,3,5,1,1,1,4,1,1,1,1,1,1,5,5,1,1,4,1,2,1,1,1,1,2,2,2,1,1,2,2,4,1,1,1,1,3,1,2,3,4,1,1,1,4,4,1,1,1,1,1,1,1,4,2,5,2,1,1,4,1,1,5,1,1,5,1,5,5,1,3,5,1,1,5,1,1,2,2,1,1,1,1,1,1,1,4,3,1,1,4,1,4,1,1,1,1,4,1,4,4,4,3,1,1,3,2,1,1,1,1,1,1,1,4,1,3,1,1,1,1,1,1,1,5,2,4,2,1,4,4,1,5,1,1,3,1,3,1,1,1,1,1,4,2,3,2,1,1,2,1,5,2,1,1,4,1,4,1,1,1,4,4,1,1,1,1,1,1,4,1,1,1,2,1,1,2
            };

//User chooses how many days to run the experiment
Console.Write("Choose how many days to run the fish experiment: ");
int numberOfDays = 0;
bool success = false;
List<int> listOfFishTemp = new List<int>()
{

};

while (success != true)
{
    success = Int32.TryParse(Console.ReadLine(), out numberOfDays);
    if (success)
    {
        //Runs the experiement as many days as chosen
        for (int j = 0; j < numberOfDays; j++)
        {
            /*Write out the whole list of fish values
            foreach (int i in listOfFish)
            {
                Console.Write(i);
                Console.Write(",");
            }
            */

            //Count all 0 = Zeros
            int Zeros = (from x in listOfFish where x < 1 select x).Count();

            //Remove all 0
            listOfFish.RemoveAll(x => x < 1);

            //Adds new fish for each Zeros
            for(int i = 0;i < Zeros; i++)
            {
                listOfFishTemp.Add(7);
                listOfFishTemp.Add(9);
            }
            //Merges the two lists
            listOfFish.AddRange(listOfFishTemp);
            //Clear listOfFishTemp
            listOfFishTemp.Clear();

            //Adds new fish (slow?)
            /*for (int i = 0; i < Zeros; i++)
            {
                //Add Zeroes amount of 6's to the list as replacement of the 0's
                listOfFish.Add(7);
                //add Zeroes amount of 8's to the List
                listOfFish.Add(9);
            }
            */

            //Count the number of elements in the fish list
            int numberOfFish = listOfFish.Count;

            //Lower all int's in listOfFish with 1
            for (int i = 0; i < numberOfFish; i++)
            {
                listOfFish[i] = listOfFish[i] - 1;
            }
            Console.WriteLine(j + " number of days has passed.");
            Console.WriteLine("There are now " + listOfFish.Count + " number of fish and counting...");
        }
    }
    else
    {
        Console.WriteLine("Error: Write a number only");
        Console.Write("Choose how many days to run the fish experiment: ");
    }
}



//Outputs the number of fish in the end
Console.WriteLine(Environment.NewLine + Environment.NewLine + "There are " + listOfFish.Count + " total fish alive after " + numberOfDays + " days.");
Console.ReadKey();

        }
    }
}