Description
In this homework, you will rewrite our N-Puzzle program using classes. Your overall program will behave very similar to your previous homework but your program structure will be considerably different.
Your main class will be named NPuzzle. It will have the following public functions
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Fuction Name |
Explanation |
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Prints the current configuration on the screen by sending it to cout |
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printReport |
Prints a report about how many moves have been done since reset and |
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if the solution is found |
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readFromFile |
Reads the current configuration from the file given as function |
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parameter. The file format is defined as in HW2. |
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writeToFile |
Writes the current configuration to the file given as function parameter |
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shuffle |
Makes N random moves to shuffle the board. N is given as a function |
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parameter. |
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reset |
Resets the current configuration to the solution. |
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setsize |
Sets the board size to given values. The values are given as parameters |
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and they can be at most 9×9. After setting the size, the boards should |
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be reset. |
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moveRandom |
Makes a valid random move |
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moveIntelligent |
Makes an “intelligent” move |
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move |
Makes a move according to the given char parameter. If the |
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parameters is ‘L’ then, the blank tiles moves left, …, etc, as defined in |
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HW1. |
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solvePuzzle |
Makes an attempt to solve the puzzle using your own algorithm from |
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HW2. |
Your NPuzzle class defines and uses a private inner class named Board, which represents the board configuration using a private C type 2D array. This class defines the following functions
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Fuction Name |
Explanation |
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Prints the board on the screen by sending it to cout |
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readFromFile |
Reads the board from the file given as function parameter. The file |
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format is defined as in HW2. |
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writeToFile |
Writes the board to the file given as function parameter |
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reset |
Resets the board to the solution. |
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Sets the board size to given values. The values are given as parameters |
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and they can be at most 9×9. After setting the size, the boards should |
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be reset. |
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move |
Makes a move according to the given char parameter. If the |
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parameters is ‘L’ then the blank tiles moves left, …, etc, as defined in |
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HW1. |
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isSolved |
Returns true if the board is a solution |
Your program will use object or objects of NPuzzle to perform what we did previously in HW1 and HW2. Your command line options and your user interface is the same. The following table is repeated here just for convenience.
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Input |
Action |
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V |
Solves the problem from the current configuration |
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using the intelligent algorithm. |
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T |
Prints a report about how many moves have been |
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done and if the solution is found |
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E |
Asks a file name and saves the current board |
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configuration as a loadable shape file. |
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O |
Asks a file name and loads the current board |
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configuration from the shape file. |
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L |
moves the empty cell left if there is room |
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R |
moves the empty cell right if there is room |
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U |
moves the empty cell up if there is room |
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D |
moves the empty cell down if there is room |
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I |
makes an “intelligent” move for you. |
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S |
Shuffle- takes the board to the final solution, and |
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makes size*size random moves to shuffle the board. |
Notes:
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Do not use any functions from the standard C library (like printf), use cout, cin, etc.
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Your program should have no global functions other than main. Do not use any global variables.
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Do not use any C++ features that we did not learn during the lectures.
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You will use all the object oriented techniques that we learned in the class including const, inline, declrtype, auto keywords.
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Do not forget to indent your code and provide comments.
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Check the validity of the user input.
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Test your programs very carefully at least with 10 different runs and submit your result files for each.
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You should submit your work to the moodle page and follow all the submission rules that will be posted.
