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

namespace ConsoleApp3
{
    class Program
    {

        static int bSearch (IEnumerable<int> array , int x)
        {
            int count = 0;
            int index =0;
            foreach ( int i in array ){
                if (i < x)
                {
                    count++;
                    index = count;
                    IsFind = true;

                    break;

                }
                else
                {

                    index = -1;
                }
            }

            return index ;
        }
        static bool IsFind = false;
        static void Main(string[] args)
        {
            int[] SomeNumbers = new int[] { 51, 15, 6, 16, 74, 83, 243, 72, 2, 34, 6, 7, 8, 62, 42 };
            IEnumerable<int> SortedNumver = from i in SomeNumbers
                                  orderby i descending

                                            select i;

            int index = bSearch(SomeNumbers, 10);
            if (IsFind)
                Console.WriteLine($"Индекс:{index.ToString()}");
            else
                Console.WriteLine("Значение не найдено");


        }
    }
}