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("the array arranged frob smaller number to number number is: ");
foreach( int x in number)
Console.Write(" "+x+" ");
int z =Array.BinarySearch(number,6);
Console.WriteLine( "the index of number we searc it is: {0} ",z);