using System;

public class Program

{

    public static void Main()

    {

    int[]number=new int [9]{ 3,4,5,1,2,8,6,9,7};

    Console.WriteLine(" enter tne element of array");

        foreach ( int x in number)

        {

            Console.Write("  "+x+"  ");

        }

        Console.WriteLine("        ");

        Console.WriteLine("the array arranged frob smaller number to number number is: ");

        Console.WriteLine("        ");

        Array.Sort(number);

        foreach( int x in number)

        {

            Console.Write("  "+x+"  ");

        }

        int z =Array.BinarySearch(number,6);

        Console.WriteLine("        ");

        Console.WriteLine( "the index of number we searc it is:  {0} ",z);

    }

}