Deleting A Specified Element In An Array Using Random Class

Question

class Check
{
     public static void Main()
     {         
              int[] arr1 = new int[] { 1, 2, 3 };
              Console.WriteLine(\"The Number That Left Us          


        

Answer 1

Arrays can not be re-sized, one you set them they are that size forever.

The "best" option is use a List instead of an int[]

class Check
{
     public static void Main()
     {         
              List arr1 = Listint[] { 1, 2, 3 };
              Console.WriteLine("The Number That Left Us Is");
              Random rnd = new Random();
              int r = rnd.Next(arr1.Length);
              int Left = (arr1[r]);
              arr1.RemoveAt(r);
              Console.WriteLine(Left);
      }
 }

To actually create a new array of one size smaller will take more code.

class Check
{
     public static void Main()
     {         
              int[] arr1 = int[] { 1, 2, 3 };
              Console.WriteLine("The Number That Left Us Is");
              Random rnd = new Random();
              int r = rnd.Next(arr1.Length);
              int Left = (arr1[r]);

              int oldLength = arr1.Length;
              arrTmp = arr1;                  
              arr1 = new int[oldLength - 1];
              Array.Copy(arrTmp, arr1, r);
              Array.Copy(arrTmp, r+1, arr1, r, oldLength - r - 1);

              Console.WriteLine(Left);
      }
 }

---

You mention "You gotta stick with the arrays", it is VERY easy to turn the list in to an array

class Check
{
     public static void Main()
     {         
              List arr1 = Listint[] { 1, 2, 3 };
              Console.WriteLine("The Number That Left Us Is");
              Random rnd = new Random();
              int r = rnd.Next(arr1.Length);
              int Left = (arr1[r]);
              arr1.RemoveAt(r);
              Console.WriteLine(Left);
              SomeFunctionThatTakesAnArrayAsAnArgument(arr1.ToArray());
      }
 }