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SudokuSolution.py
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SudokuSolution.py
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"""
Created on Sat Nov 25 15:34:57 2017
@author: Twisha
"""
def solve(question):
for i in range(0, 9):
for j in range(0, 9):
if question[i][j] == 0:
for digit in range(1,10):
valid = digitIsValid(i, j, digit, question)
if valid:
question[i][j] = digit
if solve(question):
return True
else:
question[i][j] = 0
return False
return True
def digitIsValid(row, column, digit, question):
# checking if the digit is present in the row or column
for i in range(0,9):
if question[i][column] == digit:
return False
if question[row][i] == digit:
return False
# checking if the digit is present in the small square
for i in range(0,3):
for j in range(0,3):
if question[(row / 3) * 3 + i][(column / 3) * 3 + j] == digit:
return False
return True