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Author: akgmage

Misc/tictactoe.java

@@ -1,3 +1,41 @@
+/*
+ This Java code defines a simple command-line Tic-Tac-Toe game that allows two players (X and O) to take turns making moves on a 3x3 game board. Here's an explanation of the code:
+
+1. Constants:
+   - `X` and `O` are integer constants representing the two players, with `X` assigned the value `1` and `O` assigned the value `-1`.
+   - `EMPTY` is an integer constant representing an empty cell on the game board, with a value of `0`.
+
+2. Game Board:
+   - The game board is represented by a 3x3 integer array called `board`.
+   - The `player` variable indicates which player's turn it is. It is initially set to `X`.
+
+3. Constructor:
+   - The `TicTacToe` class has a constructor that initializes a new game by clearing the board and setting the `player` to `X`.
+
+4. `clearBoard` Method:
+   - The `clearBoard` method initializes the game board by setting all cells to `EMPTY` and resets the `player` to `X`.
+
+5. `putMark` Method:
+   - The `putMark` method allows a player to make a move at a specified position (i, j).
+   - It checks for valid coordinates and an empty cell. If the move is valid, the player's mark is placed, and the turn is switched to the other player.
+   - If the move is invalid, an `IllegalArgumentException` is thrown.
+
+6. `isWin` Method:
+   - The `isWin` method checks if a player has won the game. It returns `true` if any of the winning conditions (e.g., a row, column, or diagonal with all marks of the same player) are met. Otherwise, it returns `false`.
+
+7. `winner` Method:
+   - The `winner` method determines the winner of the game. It checks for both `X` and `O` as potential winners using the `isWin` method and returns the result (positive for `X`, negative for `O`, or `0` for a tie).
+
+8. `toString` Method:
+   - The `toString` method converts the current game state to a human-readable string, representing the game board. It uses "X" and "O" to denote player marks and empty spaces as " " (space).
+
+9. `main` Method:
+   - In the `main` method, a new Tic-Tac-Toe game is created.
+   - A series of moves are made using `putMark`, and the game state is printed after each move.
+   - The final outcome of the game is determined using the `winner` method, and the result is displayed as "X wins," "O wins," or "Tie."
+
+The code provides a basic implementation of a command-line Tic-Tac-Toe game with validation for player moves and win conditions. It demonstrates how to represent the game board, make moves, and check for a win or tie in the game.
+ */
 public class TicTacToe {
     public static final int X = 1, O = -1;
     public static final int EMPTY = 0;