Build products except self

using System;

class Program
{
    static int[] ProductExceptSelf(int[] numbers)
    {
        int[] result = new int[numbers.Length];
        int prefix = 1;
        for (int i = 0; i < numbers.Length; i++)
        {
            result[i] = prefix;
            prefix *= numbers[i];
        }
        int suffix = 1;
        for (int i = numbers.Length - 1; i >= 0; i--)
        {
            result[i] *= suffix;
            suffix *= numbers[i];
        }
        return result;
    }

    static void Main()
    {
        Console.WriteLine(string.Join(" ", ProductExceptSelf(new[] { 1, 2, 3, 4 })));
    }
}