def minConflict(filename):
board=()
checks=0
board,board_size,small_row,small_col=func.convertBoard(filename)
board_copy=board
#func.printBoard(board_copy,board_size)
board_closed=[]
board_dict={}
board_dict=func.updateDict(board,board_size,small_row,small_col,{})
#find the board_closed cells
for i in range(0,board_size):
for j in range(0,board_size):
if board[i][j]!=0:
board_closed.append(board_size*i+j)
#initialize board open cells with random values
for i in range (0,board_size):
for j in range (0,board_size):
if board[i][j]==0:
board[i][j]=random.randrange(1,board_size+1)
bool_val,checks=minConflictRec(board,board_size,small_row,small_col,board_copy,board_dict,board_closed)# call the recursive function, get the final solution and #checks
if (bool_val):
print("\n successfully completed sudoku. ") # success
else:
print("\n not completed board. ",bool_val) # failure
return(board,checks)
return (board,checks)
def backtrackingRecursiveMRVcp(board,board_size,small_row,small_col):
global checks
#base case
if func.boardFull(board,board_size) :
return True,checks
minPos,board_dict_list=func.findNextPosMRV(board,board_size,small_row,small_col) # find the next MRV pos and list of values
unassigned_row=int(minPos/board_size)
unassigned_col=minPos%board_size
#update list for LCV sorted
board_dict_list=func.updateList(board,board_size,unassigned_row,unassigned_col,small_row,small_col,board_dict_list)
if (board_dict_list==[]):
return False,checks
#for every fwd consistent values
for digit in board_dict_list:
checks=checks+1
board[unassigned_row][unassigned_col]=digit
board_dict=func.updateDict(board,board_size,small_row,small_col,board_dict={})
if(backtrackingRecursiveMRVcp(board,board_size,small_row,small_col)[0]==True): # recursive calls
return True,checks
board[unassigned_row][unassigned_col]=0 # backtracking and reverting last move made
#check for backward consistency
if func.backwardConsistent(board_dict)==False:
return False,checks
return False,checks