Merge two array and store them into another array in sorted form

Merge two array and store them into another array in sorted form

public static void mergeArra(int[] arr, int[] arr2)

        {

            int[] NewArr = new int[arr.Length * 2];

            int k = 0;

                for (int i = 0; i <= 1; i++)

                {

                    if (i > 0)

                    {

                     arr = arr2;

                    }

                  

                    for (int j = 0; j <= arr.Length-1; j++)

                    {

                    NewArr[k] = arr[j];

                    k++;

                 }

            }

            Array.Sort(NewArr);

                foreach (int arr1 in NewArr)

                {

                    Console.Write(arr1 + "\t");

                }

               

        }

      

        static void Main(string[] args)

        {

            Console.WriteLine("Merge two sorted arrays into one");

            Console.WriteLine("Enter array Size");

            int arraysize = Convert.ToInt32(Console.ReadLine());

            int[] arr = new int[arraysize];

            int[] arr2 = new int[arraysize];

            Console.WriteLine("Enter the 1 array Value");

            for (int i = 0; i <= arraysize - 1; i++)

            {

                arr[i]= Convert.ToInt32(Console.ReadLine());

            }

            Console.WriteLine("Enter the 2 array Value");

            for (int i = 0; i <= arraysize - 1; i++)

            {

                arr2[i] = Convert.ToInt32(Console.ReadLine());

            }

            Array.Sort(arr);

            Array.Sort(arr2);

            Program.mergeArra(arr,arr2);

            Console.ReadLine();

           

        }

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