1.3.9.6

using System;

namespace ConsoleApplication
{
    class Program
    {
        /*
         * Реализуйте метод Shuffle, который перемешивает элементы массива в случайном порядке.
         */

        static void Main ( string [] args )
        {
            int [] nums = new int [10] {1,2,3,4,5,6,7,8,9,0 };
            nums = Shuffle ( nums );
            foreach ( int num in nums )
            {
                Console.WriteLine (num);
            }
        }
        static int [] Shuffle ( int [] originalArray )
        {
            int [] newArray = new int [originalArray.Length];
            string usedIndexes = string.Empty;
            int temp;
            int randomIndex;
            Random rand = new Random ();

            for ( int i = 0 ; i < newArray.Length ; i++ )
            {
                temp = originalArray [i];
                randomIndex = rand.Next ( 0, newArray.Length );

                while (usedIndexes.Contains(Convert.ToString( randomIndex)) )
                {
                    randomIndex = rand.Next ( 0, newArray.Length );
                }
                newArray [randomIndex] = originalArray [i];
                usedIndexes += " " + randomIndex;
            }
            return newArray;
        }
    }
}