TilePuzzle Class - Not looking for solution just how to do each method

Question

The TilePuzzle class represents the basic functionality of the tile puzzle game. Even if there is no window or text interface available, you should be able to play the game using an instance of the TilePuzzle object in the interactions pane. All other classes are used for display purposes; to show the contents of the TilePuzzle.
This class is reponsible for performing the following operations:
   1. At creation, it initializes the instance variables used to store the current state of the game.
   2. When a move is specified, it checks if it is a legal move and makes the move if it is legal.
   3. It reports information about the current state of the game when asked (whether the player has won the game, how many moves have been made, what the current tile layout is, etc.)
You are required to implement the following methods for this class:
Method Name      Description
TilePuzzle      
The constructor for this class. This constructor takes in a two-dimensional array of integers, and uses this array to initialize its internal game grid. The grid represents the tile layout: the first dimension of the input array is assumed to be the horizontal dimension of the tile layout, and the second dimension of the array is the vertical dimension of the tile layout. The top-left grid position occurs at position (0,0). For example, in a 4x4 array called grid, the value in the top-right corner would be at grid[3][0], and the bottom left value would be at grid[0][3]. The one empty space in the layout of a tile puzzle is represented in the appropriate position in the grid with the value -1. You may assume that there will only ever be one empty space (-1) in the grid.
The constructor should also set all the default values for the other instance variables used.
moveTile      
After the grid has been read and stored, the moveTile method takes in a single integer value that indicates a tile to move, and moves that tile into the blank tile's position, if it is a legal move. A move is only legal if the specified number exists in the grid, and if the specified tile's position is adjacent to the blank tile's position. The method returns a boolean value to indicate whether the move was made.
hasWon      
This method takes in no values, and returns a boolean value to indicate whether the current grid layout is a winning configuration or not. A winning configuration has the number 1 in the top-left corner, and increases incrementally from left to right along the row, continuing into the following rows (see illustation above). The empty space should be in the bottom-right corner of the grid.
numTileMoves      This method takes in no values, and returns an integer that represents the number of tile moves performed so far. Actions that have not resulted in a tile being moved are not counted.
maxTileValue      
This method takes in no values, and returns the highest value that a tile in this puzzle can have, assuming that the first tile has a value of 1 and the other tile values increase incrementally (by 1).
getGrid      
This method returns a two-dimensional array of integers that represents the current grid of tile values. The first dimension of the array represents the horizontal dimension of the grid, and the second dimension of the array represents the vertical dimension of the grid. The orientation of this grid should be consistent with that of the constructor's input parameter, so see that method's description for more clarification.
equals      
This method compares the contents of this TilePuzzle object to the given TilePuzzle and returns true if their tile grids match. It takes in a single TilePuzzle parameter to use in the comparison, and returns false if:
    * The two tile grids have the same dimensions
    * <<<<<<< index.shtml The numbers in each grid are in the same positions ======= The grids have the same dimensions, but the numbers are in different positions. >>>>>>> 1.15
toString      
Returns a String that represents the current layout of the grid in String form. Each row of the grid is separated by a newline character '\n', the adjacent tiles are separated by spaces, and the blank tile is represented with an asterisk ('*') character. For example, the winning layout for a tile grid with 3 rows and 4 columns would look like the following:
            "1 2 3 4
             5 6 7 8
             9 10 11 *"
There should be no leading or trailing spaces in each line of this String, and there should be no newline character after the final row.

Answer 1

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