com.act365.sudoku
Class NumberState

java.lang.Object
  com.act365.sudoku.NumberState

All Implemented Interfaces:

IState

public class NumberState

extends java.lang.Object

implements IState

NumberState records the number of candidates remain for each value/sector on the grid, where a sector is any row, column or subgrid.

Constructor Summary

NumberState()

Method Summary

void	addMove(int x, int y, int value) Adds the move (x,y):=v to the state grid.
void	eliminateMove(int x, int y, int value) Eliminates the move (x,y):=v from the current state grid.
void	popState(int nMoves) Reads the state gris from the stack at the appropriate position.
void	pushState(int nMoves) Writes the state grid to the stack at the appropriate position.
void	setup(int boxesAcross, int boxesDown) Sets the state grid to the appropriate size.
java.lang.String	toString() Produces a string representation of the state grid.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

NumberState

public NumberState()

Method Detail

setup

public void setup(int boxesAcross,
                  int boxesDown)

Sets the state grid to the appropriate size.

Specified by:

setup in interface IState

See Also:

IState.setup(int,int)

pushState

public void pushState(int nMoves)

Writes the state grid to the stack at the appropriate position.

Specified by:

pushState in interface IState

Parameters:

nMoves - thread position to which state should be written

See Also:

IState.pushState(int)

popState

public void popState(int nMoves)

Reads the state gris from the stack at the appropriate position.

Specified by:

popState in interface IState

Parameters:

nMoves - thread position from which state should be read

See Also:

IState.popState(int)

addMove

public void addMove(int x,
                    int y,
                    int value)
             throws java.lang.Exception

Adds the move (x,y):=v to the state grid.

Specified by:

addMove in interface IState

Parameters:

value - is in the range [0,cellsInRow), not [1,cellsInRow].

Throws:

java.lang.Exception

See Also:

IState.addMove(int, int, int)

eliminateMove

public void eliminateMove(int x,
                          int y,
                          int value)

Eliminates the move (x,y):=v from the current state grid.

Specified by:

eliminateMove in interface IState

Parameters:

value - is in the range [0,cellsInRow), not [1,cellsInRow].

See Also:

IState.eliminateMove(int, int, int)

toString

public java.lang.String toString()

Produces a string representation of the state grid.

Specified by:

toString in interface IState