Java problem.Here is an enum. public enum Direction { NORTH, EAST, SOUTH, WEST;} 

And then I need to return direction.

/**  * Constructor for a tile.  *  * @param tileID The tile ID, a number from 0 ... 8 which encodes which tile  * is being constructed. 0..3 are the curve tiles (A, B, C, D).  * 4 and 5 are the bridge tiles (E, F), 6 and 7 are the plain  * intersection tiles (G, H), and 8 is the CAT tile (I).  * @param tileCode The tile code encodes the placement of the tile, encoding  * the position and orientation (as described below).  * 
  * The tile code encodes the tile index and tile rotation as follows:  * 
  * tilecode = tilerotation + (4 * tileindex)  * 
  * where tilerotation is a number 0..4 representing orientations  * NORTH (0), EAST (1), SOUTH (2), and WEST (3), and tileindex is a  * number 0..8 representing which of the nine positions a tile  * may be placed in. Tile position 0 corresponds to board position 6,  * while tile position 4 corresponds to board position 12.  * 
  * tile index:  * 0 1 2  * 3 4 5  * 6 7 8  * 
  * board positions:  * 6 7 8  * 11 12 13  * 16 17 18  */ public Tile(int tileID, int tileCode) { this.tileID = tileID; position = tileCodeToPosition(tileCode); ; orientation = tileCodeToOrientation(tileCode); tileType = TileType.fromTileID(tileID); } 

 /**  * Given a tile code, decode the tile's rotation, using the description  * of tile encoding above.  * 
  * For example, if the tile code is 0, then the function should return NORTH.  * If the tile code is 1, then the function should return EAST. If the tile  * code is 7, then the function should return WEST etc.  *  * @param tileCode The encoded tile rotation and position  * @return the corresponding direction of rotation (where NORTH is upright).  */  static Direction tileCodeToOrientation(int tileCode) { return }