Why is an array needed in the method and what should be done so that when entering data into the array, an exception is not thrown?

Question

.NET

using System;



namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {

            
            

            void Func(int[] numbers,int L, int R)
            {
                int  middle, I, J, F, Z;
                
                I = L; J = R;
                middle = (L + R) / 2;
                do
                {
                    do
                    {
                        F = 0;
                        if (numbers[I] < numbers[middle]) F = -1;
                        if (numbers[I] > numbers[middle]) F = 1;
                        if (F > 0) I = I + 1;
                        Console.WriteLine(I);

                    }
                    while
                    (F < 0);
                    do
                    {
                        F = 0;
                        if (numbers[J] < numbers[middle]) F = -1;
                        if (numbers[J] > numbers[middle]) F = 1;
                        if (F > 0) J = J + 1;
                        Console.WriteLine(J);
                    }
                    while
                    (F < 0);
                    if  (I <= J)
                    { 
                        Z = numbers[I]; numbers[I] = numbers[J]; numbers[J] = Z;
                    }
                }
                while
                (I <= J);
                if (L < J) Func(numbers, L, J);
                 else if (I < R) Func(numbers, I, R);
            }
            Func(numbers,15, 10);
        }
    }
}

Why do we need an array in this method, what role does it play and how to bypass the exception so as not to process it, a stupid question, but the code was written from an algorithmic language and I'm sure there is no such thing in terms of error handling

Answer 1

You saved the code crookedly, apparently. You have func nested in main. This is firstly, and secondly, why - this is after all quick sorting, and yes, in order to sort an array, you need to pass it to it. And inputting data to an array in your code is not currently present.