aplusrefa.blogg.se - Sudoku solver

#Sudoku solver code#
#Sudoku solver download#

To enter a new problem, click Clear All.

If you want to modify the problem, click the Modify input button.

To see the next solution, click the Next Solution button.

If the problem has many solutions, the first 10 ( LIMIT defined in stdafx.h) are only evaluated.

The numbers can be fed using tab key and the keypad quickly or by using just the mouse leisurely.

#Sudoku solver download#

To do this, download the file sud_demo.zip. A procedure involving guesses is the most appropriate since a procedure involving conformative evaluation in each step would be very complex, if possible.Any solution involving recursive calls would surely result in a stack overflow during runtime.It is quite simple to apply to this problem.The backtracking procedure seemed to be the most appropriate procedure since:.We may think of improving the backtracking procedure by using more intelligence in function evaluate().barrs: A class similar to list but more appropriate to use in function evaluate().i & j represent the row & column of the position respectively. An object of this class represents a position in a Sudoku matrix.

num: A class derived from System::Windows::Forms::DomainUpDown.An object of this class is used in class sudokugame to store solutions of a given puzzle. LIST: A template class containing some list operations.The function validsarr(bool comp) is used to find whether a given array is a completely ( if comp=true)/incompletely ( if comp=false) filled valid Sudoku row/column/grid. sudokugame: Contains the heart of the project (the function evaluate() to solve the puzzle).

#Sudoku solver code#

The code consists of the following classes among others: I would like to get the reader's reaction to this issue. Any modification to a problem can be done after it has been solved easily by clicking "Modify input" button.Īll important parts of the code are provided with appropriate comments and hence I feel not much explanation is needed of the code here.The digits which are part of the problem appear in a color different from the other digits in the solution.Can find out the number of solutions a given puzzle has.Can solve partial Sudoku puzzles (Can solve Sudoku puzzles having more than one solution).Hence, we go to the previous step and make a different choice and proceed. At a certain step, if none of the possibilities turns out to be feasible, we know that anyone/some of our guesses is/are wrong. After making each choice, we check whether it is feasible. We make a guess of the choice among the possibilities and proceed to the next step. Some problems can be solved in a certain number of steps sequentially, wherein in each step we have to choose between certain number of possibilities. BackgroundĪ knowledge of backtracking algorithms such as Solution to the N Queens problem would be helpful. As the name indicates, the project is to solve a Sudoku puzzle.