Jagged Array

using System;

namespace random
{
    class Program
    {
        static void Main(string[] args)
        {
            int[][] jaggedArray = new int[3][];


            //declaring jaggedArray without specifying values, just the size of the arrays.
            jaggedArray[0] = new int[5];
            jaggedArray[1] = new int[3];
            jaggedArray[2] = new int[2];

            //declaing jaggedArry and specifying values without stating the size of array.
            jaggedArray[0] = new int[] { 2, 3, 5, 7, 11 };
            jaggedArray[1] = new int[] { 1, 2, 3 };
            jaggedArray[2] = new int[] { 13, 21 };

            // alternative method:

            int[][] jaggedArray2 = new int[][]
            {
                new int[] { 2, 3, 5, 7, 11 },
                new int[] { 1, 2, 3 },
                new int[] { 13, 21 }
            };

            Console.WriteLine($"The value in the middle of the first entry is {jaggedArray2[0][2]}\n");

            //Print to Console all values in jaggedArray2

            for (int i = 0; i< jaggedArray2.Length; i++)    //first for loop is getting the 1st, 2nd, and 3rd array in jaggedArray2
            {
                Console.WriteLine("Element {0}", i);
                for (int j = 0; j < jaggedArray2[i].Length; j++)
                    Console.WriteLine("{0} ", jaggedArray2[i][j]); //position 'i', which is going to be 0, 1 or 2
            }                                                      //position 'j', which is going to be 0-4, 0-2, then 0-1

            Console.ReadLine();
        }


    }
}