Sorting of 2 arrays

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

namespace OnlineExercise15._4
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] arrayNum1 = new int[] { 1, 3, 5, 7 };
            int[] arrayNum2 = new int[] { 2, 4, 6, 8 };

            int[] arrayNumber3 = new int[arrayNum1.Length + arrayNum2.Length];

            int i = 0;
            int j = 0;
            int k = 0;

            while(k < arrayNumber3.Length)
            {
                if(i >= arrayNum1.Length )
                {
                    arrayNumber3[k] = arrayNum2[j];
                    j++;
                }
                else if(j >= arrayNum2.Length)
                {
                    arrayNumber3[k] = arrayNum1[i];
                    i++;
                }

                else if(arrayNum1[i] < arrayNum2[j])
                {
                    arrayNumber3[k] = arrayNum1[i];
                    i++;
                }
                else
                {
                    arrayNumber3[k] = arrayNum2[j];
                    j++;
                }
                k++;
            }

            for(int m = 0; m < arrayNumber3.Length; m++)
            {
                Console.Write(arrayNumber3[m] + " ");
            }
            Console.ReadKey();
        }


    }
}