using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _4_6
{
    class Program
    {
        static void Main(string[] args)
        {
            Random r = new Random();

            //int[] array = new int[30];
            int[] array = {2,4,6,2,5,45,3 };

            /*for (int i = 0; i < array.Length; i++)
            {
                array[i] = r.Next(0, 78);
                Console.Write(array[i] + " ");
            }*/
            for (int i = 0; i < array.Length; i++)
                Console.Write(array[i] + " ");
            Console.WriteLine();

            Shuffle(array);

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

                Console.Write(array[i] + " ");
            }
            Console.WriteLine();
        }
        static void Shuffle(int[] array)
        {
            Random r = new Random();

            for (int i = array.Length - 1; i >= 1 ; i--)
            {
                int random = r.Next(i + 1);
                int t = array[random];
                array[random] = array[i];
                array[i] = t;
            }
        }

    }
}