//******************************************************************
// Cinema.java                Author: Torben Hoffmann
//                            revideret af Anne Haxthausen
// A simple represtation of cinemas.
//******************************************************************

public class Cinema
{
   private boolean[][] cinema;

   public
   Cinema (int[] seatsOnRow)
      {
         cinema = new boolean[seatsOnRow.length][];

         for (int i=0; i<seatsOnRow.length; i++)
            cinema[i] = new boolean[seatsOnRow[i]];
      }

   public
   int rows ()
      {
         return cinema.length;
      }

   public 
   int seatsOnRow (int row)
      {
         return cinema[row].length;
      }

   public
   int seats ()
      {
         int res=0;

         for (int i=0; i<cinema.length; i++)
            res = res + cinema[i].length;

         return res;
      }

   public 
   int rowVacancies (int row)
      {
         int res=0;

         for (int i=0; i<cinema[row].length; i++)
            if (!cinema[row][i])
               res = res +1;

         return res;
      }

   public
   int vacancies ()
      {
         int res = 0;

         for (int i=0; i<cinema.length; i++)
            res = res + this.rowVacancies(i);

         return res;
      }

   public
   void book (int row, int seat)
      {
         cinema[row][seat] = true;
      }

   public
   void release (int row, int seat)
      {
         cinema[row][seat] = false;
      }

   // auxillary function
   private static
   String rowToString(boolean[] row)
      {
         String res = "";

         for (int i=0; i<row.length; i++)
         {
            if (row[i])
               res = res + "# ";
            else
               res = res + "O ";
         } 
         return res;
      }


   public
   String toString ()
      {
         String res = "";

         for (int i=0; i<cinema.length; i++)
            res = res + rowToString(cinema[i]) + "\n";
         
         return res;
      }


} // Cinema