java.lang.Object
g1201_1300.s1275_find_winner_on_a_tic_tac_toe_game.Solution

public class Solution extends Object
1275 - Find Winner on a Tic Tac Toe Game\. Easy **Tic-tac-toe** is played by two players `A` and `B` on a `3 x 3` grid. The rules of Tic-Tac-Toe are: * Players take turns placing characters into empty squares `' '`. * The first player `A` always places `'X'` characters, while the second player `B` always places `'O'` characters. * `'X'` and `'O'` characters are always placed into empty squares, never on filled ones. * The game ends when there are **three** of the same (non-empty) character filling any row, column, or diagonal. * The game also ends if all squares are non-empty. * No more moves can be played if the game is over. Given a 2D integer array `moves` where moves[i] = [rowi, coli] indicates that the ith move will be played on grid[rowi][coli]. return _the winner of the game if it exists_ (`A` or `B`). In case the game ends in a draw return `"Draw"`. If there are still movements to play return `"Pending"`. You can assume that `moves` is valid (i.e., it follows the rules of **Tic-Tac-Toe** ), the grid is initially empty, and `A` will play first. **Example 1:** ![](https://assets.leetcode.com/uploads/2021/09/22/xo1-grid.jpg) **Input:** moves = \[\[0,0],[2,0],[1,1],[2,1],[2,2]] **Output:** "A" **Explanation:** A wins, they always play first. **Example 2:** ![](https://assets.leetcode.com/uploads/2021/09/22/xo2-grid.jpg) **Input:** moves = \[\[0,0],[1,1],[0,1],[0,2],[1,0],[2,0]] **Output:** "B" **Explanation:** B wins. **Example 3:** ![](https://assets.leetcode.com/uploads/2021/09/22/xo3-grid.jpg) **Input:** moves = \[\[0,0],[1,1],[2,0],[1,0],[1,2],[2,1],[0,1],[0,2],[2,2]] **Output:** "Draw" **Explanation:** The game ends in a draw since there are no moves to make. **Constraints:** * `1 <= moves.length <= 9` * `moves[i].length == 2` * 0 <= rowi, coli <= 2 * There are no repeated elements on `moves`. * `moves` follow the rules of tic tac toe.
  • Constructor Details

    • Solution

      public Solution()
  • Method Details

    • tictactoe

      public String tictactoe(int[][] moves)