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Second solution in Clear category for Xs and Os Referee by nomis517
# -*- coding: utf-8 *-*
def checkio(data):
'''
Takes a grid representing a tic-tac-toe game
and returns the winner
("X" : X wins
"O" : O wins
"D" : Draw)
'''
winner = 'D'
#Check horizontal lines
for i in range(3):
if data[i] == 'XXX':
winner = 'X'
if data[i] == 'OOO':
winner = 'O'
#Check vertical lines
for i in range(3):
if data[0][i] == data[1][i] == data[2][i] == 'X':
winner = 'X'
if data[0][i] == data[1][i] == data[2][i] == 'O':
winner = 'O'
#Chek diagonals
if data[0][0] == data[1][1] == data[2][2] == 'X' or data[2][0] == data[1][1] == data[0][2] == 'X':
winner = 'X'
if data[0][0] == data[1][1] == data[2][2] == 'O' or data[2][0] == data[1][1] == data[0][2] == 'O':
winner = 'O'
return winner
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
assert checkio([
"X.O",
"XX.",
"XOO"]) == "X", "Xs wins"
assert checkio([
"OO.",
"XOX",
"XOX"]) == "O", "Os wins"
assert checkio([
"OOX",
"XXO",
"OXX"]) == "D", "Draw"
assert checkio([
"O.X",
"XX.",
"XOO"]) == "X", "Xs wins again"
Nov. 8, 2015
