using System;

using System.Linq;

using System.Collections.Generic;

​

public class Program

{   

    private static Random _rnd = new Random();

    public static void Main()

    {

        int randomNumber = GetRandomNumber(3, 19);

        Console.WriteLine($"Nahodne cislo: {randomNumber}");

        string letter = OneLetter();  

        Console.WriteLine($"Nahodne pismeno je: {letter}");

        string randomLetters = NLetter(5);//zde bude pouziti  funkce 2) => vypise se parametrem stanoveny pocet nahodnych pismen

        Console.WriteLine($"Nahodne znaky: {randomLetters}");

        string oneLetter = OnePositionLetter(1); // Metoda bude žrát číslo, toto číslo bud sloužit jako pozice v abecedě, Vrátit písmenu na této pozici

        Console.WriteLine($"Nahodne pismeno je: {oneLetter}");

        int[] array = {1,3,5};

        Console.WriteLine($"V poli pismeno je: {oneLetter}");

    }

​

    private static int GetRandomNumber(int min, int max)

    {

        return _rnd.Next(min, max);

    }

    private static string OneLetter()

    {

        string retval = "";

        string[] alphabet = new string[] {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"};

        int i = GetRandomNumber(0, alphabet.Length - 1);

        retval = alphabet[i];

        return retval;

    }

    private static string NLetter(int num)

    {

        string result = "";

        for (int i = 0; i < num; i++) 

        {

            result += OneLetter();

        }

        return result; 

    }

    private static string OnePositionLetter(int pickNumber)

    {

        string[] alphabet = new string[] {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"};

        return alphabet[pickNumber - 1];

    }

        private static void PrintLettersOnPisitions(int array)

    {

        for (int i = 0; i < array; i++) 

        {

            OneLetter();

        }

    }

}