Algorithm: efficient way to remove duplicate integers from an array

Question

I got this problem from an interview with Microsoft.

Given an array of random integers, write an algorithm in C that removes duplicated numbers an

Answer 1

In Java I would solve it like this. Don't know how to write this in C.

   int length = array.length;
   for (int i = 0; i < length; i++) 
   {
      for (int j = i + 1; j < length; j++) 
      {
         if (array[i] == array[j]) 
         {
            int k, j;
            for (k = j + 1, l = j; k < length; k++, l++) 
            {
               if (array[k] != array[i]) 
               {
                  array[l] = array[k];
               }
               else
               {
                  l--;
               }
            }
            length = l;
         }
      }
   }