Need some help/ideas on arrays

[banditt_77]

I have this program where I have use arrays to book room reservations in hotel, however I'm completely stuck on what I need to do if I wanted to cancel the rooms already and returning them to the array to be re booked.
Here is part of my code.

public int reserveRoomType( int type ) {
      int first, last;
      switch( type ) {
         case 1:
            first = 0;
            last = 4;
            break;
         case 2:
            first = 5;
            last = 9;
            break;
         case 3:
            first = 10;
            last = 10;
            break;
         case 4:
            first = 11;
            last = 11;
            break;
         default:
            StdOut.println();
            StdOut.println( "Invalid room type: " + type );
            return -1;
      }
      for( int i = first; i <= last; i++ ) {
         if ( !reservations[i] ) {
            // A room of this type is available, tell the user!
            StdOut.println();
            StdOut.printf( "Room %d reserved for you!\n", 101 + i );
            reservations[i] = true;


            return -1;
         }
      }
      // All rooms of this type are occupied
      StdOut.println();
      StdOut.println( "Sorry, but all rooms of this type are occupied!" );
      do {
         StdOut.println();
         StdOut.printf( "Do you accept an alternative? (yes/no) " );
         String response = StdIn.readString();
         if ( "no".equalsIgnoreCase( response ) ) {
            StdOut.println();
            StdOut.println( "Reservations for other days will be available soon." );
            return -1;
         } else if ( "yes".equalsIgnoreCase( response ) ) {
            StdOut.println();
            return type;
         }
         StdOut.println();
         StdOut.println( "Please type 'yes' or 'no'!" );
      } while( true );
   }

   /**
    * Print the reservations.
    * This method prints a line for each room type and print the number of
    * occupied rooms and the number of rooms of that type.
    * Also it prints a line about the totals at the end. 
    */
   public void printReservations() {
      StdOut.println();
      StdOut.println( "The following rooms are occupied:");
      StdOut.println();
      int total = 0;
      // Print info for all 4 room types
      int count = 0;
      for( int i = 0; i <= 4; i++ ) {
         if ( reservations[i] )
            { count++; }
      }
      StdOut.printf( "   1 king bed and non-smoking room:     %d of 5 occupied\n", count );
      total += count;

      count = 0;
      for( int i = 5; i <= 9; i++ ) {
         if ( reservations[i] )
            { count++; }
      }
      StdOut.printf( "   2 double beds and non-smoking room:  %d of 5 occupied\n", count );
      total += count;

      count = ( reservations[10] ? 1 : 0 );
      StdOut.printf( "   1 king bed and smoking room:         %d of 1 occupied\n", count );
      total += count;

      count = ( reservations[11] ? 1 : 0 );
      StdOut.printf( "   2 double beds and smoking room:      %d of 1 occupied\n", count );
      total += count;

      StdOut.println();
      StdOut.printf( "   %d of 12 rooms occupied\n", total );
      StdOut.println();
   }
   public void cancelreservations(){
       StdOut.println();
          StdOut.println( "Please enter the Room Number you want to cancel the reservation:");
          StdOut.println();
          int choice = StdIn.readInt();
          for( int i = choice; i <= choice; i++ ) {
         if (reservations[choice] = reservations[i])


             reservations[i] = false;



             }
          }