added Tic-tac-toe in java

tic-tac-toe/TicTacToe.java

@@ -0,0 +1,145 @@
+
+public class TicTacToe {
+
+	public boolean hasWinner(char[][] board, char player) {
+		// TODO Auto-generated method stub
+		for (int i = 0; i < board.length; i++) {
+			for (int j = 0; j < board[i].length; j++) {
+				boolean check = true;
+				if (board[i][j] == player) {
+					for (int row = 0; row < board.length; row++) {
+						if (board[i][row] != player) {
+
+							check = false;
+						}
+					}
+					if (check == true) {
+						return check;
+					}
+					check = true;
+					for (int column = 0; column < board.length; column++) {
+
+						if (board[column][j] != player) {
+							check = false;
+						}
+					}
+					if (check == true) {
+						return check;
+					}
+
+					if (i == j) {
+						check = true;
+						for (int dia = 0; dia < board.length; dia++) {
+							if (board[dia][dia] != player) {
+								check = false;
+							}
+						}
+						if (check == true) {
+							return check;
+						}
+					}
+					if ((i == 1 && j == 1) || (i == 2 && j == 0) || (i == 0 && j == 2)) {
+						check = true;
+						for (int dia = 0; dia < board.length; dia++) {
+							if (board[dia][2 - dia] != player) {
+								check = false;
+							}
+						}
+
+						if (check == true) {
+							return check;
+						}
+					}
+
+				}
+
+			}
+		}
+		return false;
+	}
+
+	public void printBoard(char[][] board) {
+		// TODO Auto-generated method stub
+		for (int i = 0; i < board.length; i++) {
+			for (int j = 0; j < board.length; j++) {
+				System.out.print(board[i][j]);
+			}
+			System.out.println("");
+		}
+
+	}
+
+	public void intializeBoard(char[][] board) {
+		// TODO Auto-generated method stub
+		for (int i = 0; i < board.length; i++) {
+			for (int j = 0; j < board[i].length; j++) {
+				board[i][j] = '0';
+			}
+		}
+
+	}
+
+	public boolean validMove(char[][] board, int[] playerMove, char player) {
+		// TODO Auto-generated method stub
+		if (board[playerMove[0]][playerMove[1]] == '0') {
+			return true;
+		}
+		return false;
+	}
+
+	public char changePlayer(char player) {
+		// TODO Auto-generated method stub
+		if (player == 'X') {
+			player = 'O';
+		} else {
+			player = 'X';
+		}
+		return player;
+	}
+
+  public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		TicTacToe game = new TicTacToe();
+		char[][] board = new char[3][3];
+		int moves = 9;
+		game.intializeBoard(board);
+		char player;
+		System.out.println("Welcome to XO game");
+		System.out.println("the first player is X");
+		player = 'X';
+		Scanner scan = new Scanner(System.in);
+		while (moves != 0) {
+			System.out.println("enter the coordinates of your move");
+			int x = scan.nextInt();
+			int y = scan.nextInt();
+			if (x < 0 || x > board.length - 1 || y < 0 || y > board.length - 1) {
+				System.out.println("invalid Move");
+				continue;
+			}
+			int[] playerMove = new int[2];
+			playerMove[0] = x;
+			playerMove[1] = y;
+			if (game.validMove(board, playerMove, player)) {
+				board[x][y] = player;
+				moves--;
+				if (game.hasWinner(board, player)) {
+					game.printBoard(board);
+					System.out.printf("Congratulations player %c has Won", player);
+					break;
+				} else {
+					player = game.changePlayer(player);
+				}
+			} else {
+				System.out.println("invalid Move");
+				continue;
+
+			}
+			game.printBoard(board);
+		}
+		if (moves == 0) {
+			System.out.println("No one won");
+		}
+		scan.close();
+
+	}
+}