Tic-Tac-Toe Winner

A 3×3 board is given as three strings of X, O and . (empty). A player wins with three of their marks in a row, column or diagonal. Boards never have two winners.

Implement tic_tac_toe_winner(board).

Input

board: Three rows of three characters each.

Output

Return "X" or "O" for the winner, "Draw" if the board is full with no winner, or "Pending" if empty cells remain and nobody has won.

Vincoli

board has exactly 3 rows of length 3

Esempi

Input:
board = ["XOX", ".X.", "O.X"]

Output atteso:
expected = "X"

Input:
std::vector<std::string> board = {"XOX", ".X.", "O.X"};

Output atteso:
std::string expected = "X";

Input:
string[] board = new string[] {"XOX", ".X.", "O.X"};

Output atteso:
string expected = "X";

Input:
board = ["XOX", "XOO", "OXX"]

Output atteso:
expected = "Draw"

Input:
std::vector<std::string> board = {"XOX", "XOO", "OXX"};

Output atteso:
std::string expected = "Draw";

Input:
string[] board = new string[] {"XOX", "XOO", "OXX"};

Output atteso:
string expected = "Draw";

Riferimenti

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• GWU CS1111 Introduction to Software Development - lab sequence