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Nested list comprehension and indexing with enumerate() solution in Clear category for Xs and Os Referee by pseidel
from typing import List
def checkio(game_result: List[str]) -> str:
rows = game_result
columns = [''.join(row[i] for row in rows) for i in range(len(rows))]
diagonals = ([''.join(row[i] for (i, row) in enumerate(rows))]
+ [''.join(row[i] for (i, row) in enumerate(rows[::-1]))])
result = rows + columns + diagonals
return ('O' if 'OOO' in result
else 'X' if 'XXX' in result
else 'D')
if __name__ == '__main__':
print("Example:")
print(checkio(["X.O",
"XX.",
"XOO"]))
#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"
print("Coding complete? Click 'Check' to review your tests and earn cool rewards!")
Aug. 9, 2019
