array manipulator

using System;
using System.Collections.Generic;
using System.ComponentModel.Design;
using System.Diagnostics.CodeAnalysis;
using System.Linq;


namespace ConsoleApp6
{
    class Program
    {

        static void Main(string[] args)
        {
            List<int> numbers = Console.ReadLine().Split().Select(int.Parse).ToList();

            List<string> input = Console.ReadLine().Split().ToList();

            while (input[0] != "end")
            {
                if (input[0] == "exchange")
                {

                    int indexExchange = int.Parse(input[1]);

                    if (indexExchange < 0 || indexExchange >= numbers.Count)
                    {
                        Console.WriteLine("Invalid index");
                    }
                    else
                    {
                        for (int i = 0; i <= indexExchange; i++)
                        {
                            int temp = numbers[0];
                            numbers.Remove(numbers[0]);
                            numbers.Add(temp);
                        }
                    }

                }
                else if (input[0] == "max" && input[1] == "odd")
                {
                    bool matchFound = false;
                    int maxValue = int.MinValue;
                    for (int i = 0; i < numbers.Count; i++)
                    {
                        int temp = numbers[i];

                        if (temp % 2 == 1)
                        {
                            if (temp > maxValue)
                            {
                                maxValue = temp;
                                numbers.FindIndex(x => x == maxValue);
                                matchFound = true;
                            }
                        }

                    }

                    if (matchFound)
                    {
                        Console.WriteLine(numbers.FindIndex(x => x == maxValue));
                    }
                    else
                    {
                        Console.WriteLine("No matches");
                    }


                }
                else if (input[0] == "max" && input[1] == "even")
                {
                    bool matchFound = false;
                    int maxValue = int.MinValue;
                    for (int i = 0; i < numbers.Count; i++)
                    {
                        int temp = numbers[i];

                        if (temp % 2 == 0)
                        {
                            if (temp > maxValue)
                            {
                                maxValue = temp;
                                numbers.FindIndex(x => x == maxValue);
                                matchFound = true;
                            }
                        }

                    }

                    if (matchFound)
                    {
                        Console.WriteLine(numbers.FindIndex(x => x == maxValue));
                    }
                    else
                    {
                        Console.WriteLine("No matches");
                    }

                }
                else if (input[0] == "min" && input[1] == "odd")
                {
                    bool matchFound = false;
                    int minValue = int.MaxValue;
                    for (int i = 0; i < numbers.Count; i++)
                    {
                        int temp = numbers[i];

                        if (temp % 2 == 1)
                        {
                            if (temp < minValue)
                            {
                                minValue = temp;
                                numbers.FindIndex(x => x == minValue);
                                matchFound = true;
                            }
                        }

                    }

                    if (matchFound)
                    {
                        Console.WriteLine(numbers.FindIndex(x => x == minValue));
                    }
                    else
                    {
                        Console.WriteLine("No matches");
                    }

                }
                else if (input[0] == "min" && input[1] == "even")
                {
                    bool matchFound = false;
                    int minValue = int.MaxValue;
                    for (int i = 0; i < numbers.Count; i++)
                    {
                        int temp = numbers[i];

                        if (temp % 2 == 0)
                        {
                            if (temp < minValue)
                            {
                                minValue = temp;
                                numbers.FindIndex(x => x == minValue);
                                matchFound = true;
                            }
                        }

                    }

                    if (matchFound)
                    {
                        Console.WriteLine(numbers.FindIndex(x => x == minValue));
                    }
                    else
                    {
                        Console.WriteLine("No matches");
                    }

                }
                else if (input[0] == "first" && input[2] == "odd")
                {
                    List<int> firstOdd = new List<int>();

                    bool invalid = false;
                    int count = int.Parse(input[1]);
                    int counter = 0;

                    if (count > numbers.Count)
                    {
                        Console.WriteLine("Invalid count");
                        invalid = true;
                    }
                    else
                    {
                        for (int i = 0; i < numbers.Count; i++)
                        {
                            if (numbers[i] % 2 != 0)
                            {
                                firstOdd.Add(numbers[i]);

                                counter++;

                                if (count == counter)
                                {
                                    break;
                                }
                            }
                        }
                    }

                    if (!invalid)
                    {
                        Console.WriteLine($"[{string.Join(", ", firstOdd)}]");
                        // Console.WriteLine("[" + (string.Join(", ", firstOdd)) + "]");
                    }
                }
                else if (input[0] == "first" && input[2] == "even")
                {
                    List<int> firstOdd = new List<int>();

                    bool invalid = false;
                    int count = int.Parse(input[1]);
                    int counter = 0;

                    if (count > numbers.Count)
                    {
                        Console.WriteLine("Invalid count");
                        invalid = true;
                    }
                    else
                    {
                        for (int i = 0; i < numbers.Count; i++)
                        {
                            if (numbers[i] % 2 == 0)
                            {
                                firstOdd.Add(numbers[i]);

                                counter++;

                                if (count == counter)
                                {
                                    break;
                                }
                            }

                        }
                    }

                    if (!invalid)
                    {
                        Console.WriteLine($"[{string.Join(", ", firstOdd)}]");
                        // Console.WriteLine("[" + (string.Join(", ", firstOdd)) + "]");
                    }
                }
                else if (input[0] == "last" && input[2] == "even")
                {
                    numbers.Reverse();

                    List<int> firstOdd = new List<int>();

                    bool invalid = false;
                    int count = int.Parse(input[1]);
                    int counter = 0;

                    if (count > numbers.Count)
                    {
                        Console.WriteLine("Invalid count");
                        invalid = true;
                    }
                    else
                    {
                        for (int i = 0; i < numbers.Count; i++)
                        {
                            if (numbers[i] % 2 == 0)
                            {
                                firstOdd.Add(numbers[i]);

                                counter++;

                                if (count == counter)
                                {
                                    break;
                                }
                            }
                        }

                        numbers.Reverse();

                        if (!invalid)
                        {
                            Console.WriteLine($"[{string.Join(", ", firstOdd)}]");
                            // Console.WriteLine("[" + (string.Join(", ", firstOdd)) + "]");
                        }

                    }

                }
                else if (input[0] == "last" && input[2] == "odd")
                {
                    numbers.Reverse();

                    List<int> firstOdd = new List<int>();

                    bool invalid = false;
                    int count = int.Parse(input[1]);
                    int counter = 0;

                    if (count > numbers.Count)
                    {
                        Console.WriteLine("Invalid count");
                        invalid = true;
                    }
                    else
                    {
                        for (int i = 0; i < numbers.Count; i++)
                        {
                            if (numbers[i] % 2 == 1)
                            {
                                firstOdd.Add(numbers[i]);

                                counter++;

                                if (count == counter)
                                {
                                    break;
                                }
                            }
                        }

                        numbers.Reverse();

                        if (!invalid)
                        {
                            Console.WriteLine($"[{string.Join(", ", firstOdd)}]");
                            // Console.WriteLine("[" + (string.Join(", ", firstOdd)) + "]");
                        }
                    }

                }

                input = Console.ReadLine().Split().ToList();
            }

            Console.WriteLine($"[{string.Join(", ", numbers)}]");

        }

    }
}