P03.Inventory (C# Shell App Paste)

//Disclaimer: The creator of 'C# Shell (C# Offline Compiler)' is in no way responsible for the code posted by any user.
using System;
using System.IO;
using System.Linq;
using System.Collections.Generic;

namespace CSharp_Shell
{

    public static class Program
    {

        public static void Main()
        {
           var journal = Console.ReadLine().Split(new []{',',' '},StringSplitOptions.RemoveEmptyEntries).ToArray();


           while(true)
           {
            var input = Console.ReadLine().ToLower();

            if(input == "exit")
            {
                break;
            }

            var commands = input.Split(" - ");
            string command = commands[0];

            if(command =="collect")
            {
                string item = commands[1];

                var newJournal = new string[journal.Length+1];

                for(int i=0;i<journal.Length;i++)
                {


                    if(item == journal[i])
                    {
                        break;
                    }
                    newJournal[i]=journal[i];
                }
                newJournal[newJournal.Length-1]=item;
                journal=newJournal;
            }

            if(command == "drop")
            {
                string item = commands[1];

                var newJournal = new string[journal.Length-1];
                for(int i=0;i<journal.Length-1;i++)
                {
                    if(item != journal[i])
                    {
                        newJournal[i]=journal[i];
                    }
                    else
                    {
                        newJournal[i]=journal[i+1];
                    }
                }

                journal=newJournal;
            }

            if(command=="combine items")
            {
                var items = commands[1].Split(':');
                var oldItem = items[0];
                var newItem = items[1];
                Console.WriteLine(oldItem);
                Console.WriteLine(newItem);
            }

            if(command=="renew")
            {
                string item = commands[1];


            }

           }
           for(int  i=0;i<journal.Length-1;i++)
           {
            Console.Write(journal[i] + ", ");

           }
            Console.Write(journal[journal.Length-1]);
            Console.WriteLine(" ");
        }
        public static T[] RemoveAt<T>(this T[] source, int index)
        {
            T[] dest = new T[source.Length - 1];
            if( index > 0 )
            Array.Copy(source, 0, dest, 0, index);

            if( index < source.Length - 1 )
            Array.Copy(source, index + 1, dest, index, source.Length - index - 1);

            return dest;
        }
    }
}