using System;
using System.Collections;
using System.Collections.Generic;

public class Kata
{
  public static int[] ArrayDiff(int[] a, int[] b)
  {
   // Console.WriteLine(a[0]);

    int[] c = new int[] {};
    int temp = 0;
    int temp2 = 0;
    c=a;

    for (int i=0; i<c.Length; i++)
    {
      temp = c[i];

      for (int j=0; j<b.Length; j++)
      {
        temp2 = b[j];
        if (temp == temp2)
        {
        c = RemoveAt(c, i);
        if (i >= 1)
        {  i = 0;
        j --;
          break;}
       // else if (i == 1)
     //   else  i = 0;
       //   break;}
        }


      }
    }

   for (int k = 0; k < c.Length; k++)  // debug Stuff
        {
           Console.WriteLine(c[k]);
        }
    Console.WriteLine("");
   // Console.WriteLine(b[0]);
   return c;
 }

  public static int[] RemoveAt(int[] arr, int index)
{
   for (int f = index; f < arr.Length - 1; f++)
    {
        arr[f] = arr[f + 1];
    }
    if (arr.Length > 0)
    Array.Resize(ref arr, arr.Length - 1);

    return arr;
}

}