Array Manipulation

using System;
using System.Globalization;
using System.Linq;
using System.Runtime.ExceptionServices;
using System.Threading;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("----WELCOME TO ARRAY MANIPULATOR----");
            Console.WriteLine("----HERE ARE THE COMMANDS YOU CAN USE TO MANIPULATE YOUR ARRAY----");
            Console.WriteLine("exchange {index} – splits the array after the given index, and exchanges the places of the two resulting sub-arrays. E.g. [1, 2, 3, 4, 5] -> exchange 2 -> result: [4, 5, 1, 2, 3]");
            Console.WriteLine("max even / odd– returns the INDEX of the max even / odd element-> [1, 4, 8, 2, 3]->max odd->print 4");
            Console.WriteLine("min even / odd – returns the INDEX of the min even / odd element-> [1, 4, 8, 2, 3]->min even > print 3");
            Console.WriteLine("first {count} even / odd– returns the first { count} elements-> [1, 8, 2, 3]->first 2 even->print[8, 2]");
            Console.WriteLine("last { count} even / odd – returns the last { count} elements-> [1, 8, 2, 3]->last 2 odd->print[1, 3]");
            Console.WriteLine("end – stop taking input and print the final state of the array");
            Console.WriteLine("-----------------------------------------------------------------");
            Console.Write("Enter your array here: ");
            int[] array = Console.ReadLine().Split(" ").Select(int.Parse).ToArray();
            CommandTaker(array);

        }

        static void CommandTaker(int[] array)
        {
            string command;
            while((command = Console.ReadLine()) != "end")
            {
                string[] commandSplit = command.Split(" ");
                if (commandSplit[0].Equals("exchange"))
                {
                    ExchangeArray(array,commandSplit[1]);
                }
                else if(command.Equals("max even"))
                {
                    MaxEven(array);
                }
                else if(command.Equals("max odd"))
                {
                    MaxOdd(array);
                }
                else if (commandSplit[0].Equals("first"))
                {
                    if (commandSplit[2].Equals("even"))
                    {
                        FirstEven(int.Parse(commandSplit[1]),array);
                    }
                    else if (commandSplit[2].Equals("odd"))
                    {
                        FirstOdd(int.Parse(commandSplit[1]), array);
                    }
                }
                else if (commandSplit[0].Equals("last"))
                {
                    if (commandSplit[2].Equals("even"))
                    {
                        LastEven(int.Parse(commandSplit[1]), array);
                    }
                    else if (commandSplit[2].Equals("odd"))
                    {
                        LastOdd(int.Parse(commandSplit[1]), array);
                    }
                }
                else if (command.Equals("min even"))
                {
                    MinEven(array);
                }
                else if (command.Equals("min odd"))
                {
                    MinOdd(array);
                }
                else
                {
                    Console.WriteLine("Invalid command.");
                }

            }
        }

        private static void LastOdd(int number, int[] array)
        {
            int counter = number;
            if (counter > array.Length)
            {
                Console.WriteLine("Invalid count!");
            }
            else
            {
                for (int i = array.Length - 1; i > 0; i--)
                {
                    if (array[i] % 2 != 0 && counter > 0)
                    {
                        Console.Write(array[i] + " ");
                        counter--;
                    }

                }
                Console.WriteLine();
            }
        }

        private static void LastEven(int number, int[] array)
        {
            int counter = number;
            if (counter > array.Length)
            {
                Console.WriteLine("Invalid count!");
            }
            else
            {
                for (int i = array.Length - 1; i > 0; i--)
                {
                    if (array[i] % 2 == 0 && counter > 0)
                    {
                        Console.Write(array[i] + " ");
                        counter--;
                    }

                }
                Console.WriteLine();
            }
        }

        private static void FirstEven(int number,int[] array)
        {
            int counter = number;
            if (counter > array.Length)
            {
                Console.WriteLine("Invalid count!");
            }
            else
            {
                for (int i = 0; i < array.Length; i++)
                {
                    if (array[i] % 2 == 0 && counter > 0)
                    {
                        Console.Write(array[i] + " ");
                        counter--;
                    }

                }
                Console.WriteLine();
            }
        }

        private static void FirstOdd(int number, int[] array)
        {
            int counter = number;
            if (counter > array.Length)
            {
                Console.WriteLine("Invalid count!");
            }
            else
            {
                for (int i = 0; i < array.Length; i++)
                {
                    if (array[i] % 2 != 0 && counter > 0)
                    {
                        Console.Write(array[i] + " ");
                        counter--;
                    }

                }
                Console.WriteLine();
            }
        }

        private static void MaxOdd(int[] array)
        {
            int maxNum = int.MinValue;
            int index = 0;
            bool isIt = false;
            for (int i = 0; i < array.Length; i++)
            {
                if (array[i] % 2 != 0 && array[i] >= maxNum)
                {
                    maxNum = array[i];
                    index = i;
                    isIt = true;
                }
            }

            if (isIt == false)
            {
                Console.WriteLine("No matches");
            }
            else
            {
                Console.WriteLine(index);
            }
        }

        private static void MinOdd(int[] array)
        {
            int minNum = int.MaxValue;
            int index = 0;
            bool isIt = false;
            for (int i = 0; i < array.Length; i++)
            {
                if (array[i] % 2 != 0 && array[i] <= minNum)
                {
                    minNum = array[i];
                    index = i;
                    isIt = true;
                }
            }

            if (isIt == false)
            {
                Console.WriteLine("No matches");
            }
            else
            {
                Console.WriteLine(index);
            }
        }

        private static void MaxEven(int[] array)
        {
            int maxNum = int.MinValue;
            int index = 0;
            bool isIt = false;
            for(int i = 0; i < array.Length; i++)
            {
                if(array[i] % 2 == 0 && array[i] >= maxNum)
                {
                    maxNum = array[i];
                    index = i;
                    isIt = true;
                }
            }
             if(isIt == false)
            {
                Console.WriteLine("No matches");
            }
            else
            {
                Console.WriteLine(index);
            }

        }

        private static void MinEven(int[] array)
        {
            int minNum = int.MaxValue;
            int index = 0;
            bool isIt = false;
            for (int i = 0; i < array.Length; i++)
            {
                if (array[i] % 2 == 0 && array[i] <= minNum)
                {
                    minNum = array[i];
                    index = i;
                    isIt = true;
                }
            }

            if (isIt == false)
            {
                Console.WriteLine("No matches");
            }
            else
            {
                Console.WriteLine(index);
            }
        }


        //The exchange method is ready
        private static void ExchangeArray(int[] arr,string number)
        {
            int exchangePoint = int.Parse(number);
            if(exchangePoint > arr.Length - 1)
            {
                Console.WriteLine("Invalid index!Outside of array boundaries.");
            }
            else
            {
                int[] assistArr = new int[arr.Length];
                int count = 0;
                for(int i = exchangePoint+1; i < arr.Length; i++)
                {
                    assistArr[count] = arr[i];
                    count++;
                }

                for(int k = 0; k <= exchangePoint; k++)
                {
                    assistArr[count] = arr[k];
                    count++;
                }

                for(int s = 0; s < arr.Length; s++)
                {
                    arr[s] = assistArr[s];
                    Console.Write(arr[s] + " ");
                }
            }
        }
    }
}