H4ck3r Sp34k

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
/*In order to work properly, the function should replace all "a"s with 4, "e"s with 3, "i"s with 1, "o"s with 0, and "s"s with 5. */
namespace EdabitChallenges
{
    class Program
    {

        static void Main(string[] args)
        {

			var replacements = new Dictionary<string, string>()
		{
			{ "a", "4" },
			{ "e", "3" },
			{ "i", "1" },
			{ "o", "0" },
			{ "s", "5" }
		};
			string str = Console.ReadLine();
			foreach (var replace in replacements)
			{
				 str = str.Replace(replace.Key, replace.Value);
			}

			Console.WriteLine(str);
			Console.ReadLine();

		}
    }

}