Index

A B C D E G I J L M P R S T U V

A

addPiece(Piece) - Method in class RailroadRushHour: Add a piece to the board.

BLANK - Static variable in class RailroadRushHour: character representation for an empty (blank) board space
board - Variable in class Piece: character representation of board
board - Variable in class RailroadRushHour: characters are used to track the occupancy of grid cells

canMoveDir(Direction) - Method in class LRPiece
canMoveDir(Direction) - Method in class Piece: Return whether or not the piece is, in general, permitted to move in the given direction.
canMoveDir(Direction) - Method in class UDPiece
CHAR - Variable in enum Direction: direction character representation

D_COL - Variable in enum Direction: direction column change
D_ROW - Variable in enum Direction: direction row change
Direction - Enum in <Unnamed>: Direction - a direction enumeration useful for orthogonal (up, down, right, left) movement direction on a grid.
displayChar - Variable in class Piece: character representing piece

expert40() - Static method in class RailroadRushHour: Return the last expert Railroad Rush Hour puzzle, the most difficult of the set.

getBottomRow() - Method in class LRPiece
getBottomRow() - Method in class LRUDPiece
getBottomRow() - Method in class Piece: Return the row of the piece's bottom right corner.
getBottomRow() - Method in class UDPiece
getDirection() - Method in class PieceMove: Return the Direction Piece is to be moved.
getLeftCol() - Method in class Piece: Return the leftmost column of the piece.
getLegalMoves() - Method in class RailroadRushHour: Return a list of legal moves for the current puzzle state.
getPiece() - Method in class PieceMove: Return the Piece to be moved.
getRightCol() - Method in class LRPiece
getRightCol() - Method in class LRUDPiece
getRightCol() - Method in class Piece: Return the column of the piece's bottom right corner.
getRightCol() - Method in class UDPiece
getTopRow() - Method in class Piece: Return the top row of the piece.

isSolved() - Method in class RailroadRushHour: Return whether or not this puzzle is solved.

junior1() - Static method in class RailroadRushHour: Return the first junior Railroad Rush Hour puzzle.
junior10() - Static method in class RailroadRushHour: Return the last junior Railroad Rush Hour puzzle.

leftCol - Variable in class Piece: piece leftmost column
LRPiece - Class in <Unnamed>: LRPiece - An abstract class for a Railroad Rush Hour puzzle piece that can move left and right.
LRPiece(char[][], char, int, int, int) - Constructor for class LRPiece: Call the superclass (Piece) constructor with the same parameters.
LRUDPiece - Class in <Unnamed>: LRUDPiece - An abstract class for a Railroad Rush Hour puzzle piece that can move in all directions.
LRUDPiece(char[][], char, int, int, int) - Constructor for class LRUDPiece: Call the superclass (Piece) constructor with the same parameters.

main(String[]) - Static method in class RandomRailroadRushHour: Test the random walk solver for various Railroad Rush Hour puzzles.

Piece - Class in <Unnamed>: Piece - An abstract class for a Railroad Rush Hour puzzle piece
Piece(char[][], char, int, int, int) - Constructor for class Piece
PieceMove - Class in <Unnamed>
PieceMove(Piece, Direction) - Constructor for class PieceMove: Construct a PieceMove with a given Piece and the Direction it is to be moved.

RailroadRushHour - Class in <Unnamed>: RailroadRushHour - a model for the Railroad Rush Hour puzzle (http://www.puzzles.com/puzzlesineducation/plans/rushhourguide.pdf ; http://en.wikipedia.org/wiki/Rush_Hour_(board_game) ; ) To use, one creates a RailroadRushHour object and then adds Piece objects via the object's addPiece(Piece) method.
RailroadRushHour(int, int) - Constructor for class RailroadRushHour: Create an empty board, ready for piece addition via addPiece(Piece).
random - Static variable in class RandomRailroadRushHour: random number generator
RandomRailroadRushHour - Class in <Unnamed>: RandomRailroadRushHour - a random solver for the Railroad Rush Hour puzzle (http://www.puzzles.com/puzzlesineducation/plans/rushhourguide.pdf ; http://en.wikipedia.org/wiki/Rush_Hour_(board_game) ; ) To use, one creates a RandomRailroadRushHour object and then adds Piece objects via the object's pieces.add(Piece) method.
RandomRailroadRushHour() - Constructor for class RandomRailroadRushHour
randomWalkSolve(RailroadRushHour) - Static method in class RandomRailroadRushHour: Attempt to solve the current puzzle via random walk, that is, trying random piece moves until a goal state is reached.

size - Variable in class Piece: piece dimension
SIZE - Static variable in class RailroadRushHour: number of interior grid squares on a side

topRow - Variable in class Piece: piece topmost row
toString() - Method in enum Direction: Return a String with the single character representation of this direction.
toString() - Method in class Piece: Return a String with the single display character for the piece.
toString() - Method in class PieceMove: Return the String concatenation of the representations for a piece and a direction.
toString() - Method in class RailroadRushHour: Return the String representation of the current puzzle state as a grid of characters that are either (1) the character of the piece occupying the grid cell, or (2) a '+' if the grid cell is empty.
tryMove(Direction) - Method in class Piece: Attempt a piece movement in a given direction, returning true or false depending on whether or not the move was successful.
tryMove() - Method in class PieceMove: Tries to make the given move.
tryMove(String) - Method in class RailroadRushHour: Given a move description (a length 2 String with a piece character followed by a direction character), attempt to make the move, and return whether or not it was legal and successful.

UDPiece - Class in <Unnamed>: UDPiece - An abstract class for a Railroad Rush Hour puzzle piece that can move up and down.
UDPiece(char[][], char, int, int, int) - Constructor for class UDPiece: Call the superclass (Piece) constructor with the same parameters.

valueOf(String) - Static method in enum Direction: Returns the enum constant of this type with the specified name.
values() - Static method in enum Direction: Returns an array containing the constants of this enum type, in the order they are declared.

A B C D E G I J L M P R S T U V