//Rextester.Program.Main is the entry point for your code. Don't change it.
//Microsoft (R) Visual C# Compiler version 2.9.0.63208 (958f2354)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
            string[] names = {"John", "Mick", "Jessica", "Nick", "Frank", "James", "Josh"};

            string name1 = names[0]; // первый элемент массива
            string name2 = ArrGetItem<string>(names, 1); // первый элемент массива (index - 1)
            Console.WriteLine("(name1): names[0] = \"{0}\" | (name2): ArrGetItem<string>(names, 1) = \"{1}\"", name1, name2);
        }
        public static T ArrGetItem<T>(T[] sourceArray, int index) => sourceArray[index - 1];
    }
}