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Second solution in Creative category for Xs and Os Referee by _Chico_
import itertools
from typing import List, Sequence
def _get_winner(triple: Sequence) -> str:
if "".join(triple) == "XXX":
return "X"
if "".join(triple) == "OOO":
return "O"
return "D"
def _get_diagonals(game_result: Sequence) -> List[List]:
return [[game_result[0][0], game_result[1][1], game_result[2][2]],
[game_result[0][2], game_result[1][1], game_result[2][0]]]
def checkio(game_result: Sequence[str]) -> str:
transposed_results = list(map(list, zip(*game_result)))
row_winners = [_get_winner(row) for row in game_result]
column_winners = [_get_winner(column) for column in transposed_results]
diagonal_winners = [
_get_winner(diagonal) for diagonal in _get_diagonals(game_result)
]
verdict_set = set(
itertools.chain(row_winners, column_winners, diagonal_winners))
return ((list(verdict_set - {"D"})) or "D")[0]
May 21, 2021
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