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java.lang.ObjectWatorWorld.AbstractGrid<E>
WatorWorld.BoundedGrid<E>
public class BoundedGrid<E>
A BoundedGrid
is a rectangular grid with a finite number of
rows and columns.
The implementation of this class is testable on the AP CS AB exam.
Constructor Summary | |
---|---|
BoundedGrid(int rows,
int cols)
Constructs an empty bounded grid with the given dimensions. |
Method Summary | |
---|---|
E |
get(Location loc)
Returns the object at a given location in this grid. |
int |
getNumCols()
Returns the number of columns in this grid. |
int |
getNumRows()
Returns the number of rows in this grid. |
ArrayList<Location> |
getOccupiedLocations()
Gets the locations in this grid that contain objects. |
boolean |
isValid(Location loc)
Checks whether a location is valid in this grid. |
E |
put(Location loc,
E obj)
Puts an object at a given location in this grid. |
E |
remove(Location loc)
Removes the object at a given location from this grid. |
Methods inherited from class WatorWorld.AbstractGrid |
---|
getEmptyAdjacentLocations, getNeighbors, getOccupiedAdjacentLocations, getValidAdjacentLocations, toString |
Methods inherited from class java.lang.Object |
---|
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public BoundedGrid(int rows, int cols)
rows > 0
and cols > 0
.)
rows
- number of rows in BoundedGridcols
- number of columns in BoundedGridMethod Detail |
---|
public int getNumRows()
Grid
public int getNumCols()
Grid
public boolean isValid(Location loc)
Grid
loc
is not null
loc
- the location to check
true
if loc
is valid in this grid,
false
otherwisepublic ArrayList<Location> getOccupiedLocations()
Grid
public E get(Location loc)
Grid
loc
is valid in this grid
loc
- a location in this grid
loc
(or null
if the location is unoccupied)
put
public E put(Location loc,
E obj)
- Description copied from interface:
Grid
- Puts an object at a given location in this grid.
Precondition: (1) loc
is valid in this grid (2)
obj
is not null
- Parameters:
loc
- the location at which to put the objectobj
- the new object to be added
- Returns:
- the object previously at
loc
(or null
if the location was previously unoccupied)
remove
public E remove(Location loc)
- Description copied from interface:
Grid
- Removes the object at a given location from this grid.
Precondition: loc
is valid in this grid
- Parameters:
loc
- the location of the object that is to be removed
- Returns:
- the object that was removed (or
null if the location
is unoccupied)
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