The three methods that are already written for you are: Method Purpose main() Th

Question

The three methods that are already written for you are: Method Purpose main() The main() method that implements the game-playing logic. printBoard This method prints the Tic-Tac-Toe board to the screen. This method will check the current board and return one of four char values depending on if a winner has been determined: X if the human player (X's) wins o if the computer player (O's) wins T if the game is a tie (neither player wins) N if the game is not done yet (no winner, spaces still available) checkWinner() Implementing the initBoard ) method char array, it initializes every element to the NULL character (an unprintable When you initially create a character) The initBoard) method needs to set each of the elements in the array parameter board to a space character so that it looks like this: You will know if your array is correctly initialized if, when you print the board the first time, it looks like a tic-tac- toe board As the game progresses, the board array will start to look like this: 0 o'

Explanation / Answer

Solution:

Note: The code for Tic tact toe in java is shared with you, please take the methods from this which will help you, this is a complete running code.

code:

package chegg;

import java.io.Console;

import java.util.Scanner;

public class TicTacToe2 {

static final int EMPTY = 0;

static final int NONE = 0;

static final int USER = 1;

static final int COMPUTER = 2;

static final int STALEMATE = 3;

public static void main(String[] args) {

// Data objects

// 1 = user, 2 = computer

int turn = USER;

// We will represent the board as nine cells

// 0 = empty, 1 = user, 2 = computer

int[][] board = new int[3][3];

// move: 1-9 representing ul through lr

int move;

// winner: 0 = none, 1 = user, 2 = computer, 3 = stalemate

int winner;

// Print Instructions

System.out.println("This is a tic-tac-toe game");

System.out.println("You are playing against the computer!");

System.out.println("Enter 1-9 to indicate your move");

// Print the board

print_board(board);

// While (game not over)

while(true) {

if(turn == USER) {

System.out.println("Your move");

move = -1;

while (move<0 || move>9 || board[move/3][move%3] != EMPTY) {

Scanner sc = new Scanner(System.in);

System.out.println("Please enter your move(0-9): ");

move = sc.nextInt();

// Console.in.readChar();

}

} else {

move = computer_move(board);

System.out.println("Computer move: " + move);

}

// Update the board

board[(int)(move/3)][move%3] = turn;

// Print the board

print_board(board);

// if game is over

winner = checkWinner(board);

if(winner != NONE)

break;

// switch turn

if(turn == USER) {

turn = COMPUTER;

} else {

turn = USER;

}

}

// Print out the outcome

switch(winner) {

case USER:

System.out.println("You won!");

break;

case COMPUTER:

System.out.println("Computer won!");

break;

default:

System.out.println("Tie!");

break;

}

}

// Print the board

public static void print_board(int[][] board) {

System.out.print(printChar(board[0][0]));

System.out.print("|");

System.out.print(printChar(board[0][1]));

System.out.print("|");

System.out.println(printChar(board[0][2]));

System.out.println("-----");

System.out.print(printChar(board[1][0]));

System.out.print("|");

System.out.print(printChar(board[1][1]));

System.out.print("|");

System.out.println(printChar(board[1][2]));

System.out.println("-----");

System.out.print(printChar(board[2][0]));

System.out.print("|");

System.out.print(printChar(board[2][1]));

System.out.print("|");

System.out.println(printChar(board[2][2]));

}

// Return an X or O, depending upon whose move it was

public static char printChar(int b) {

switch(b) {

case EMPTY:

return ' ';

case USER:

return 'X';

case COMPUTER:

return 'O';

}

return ' ';

}

// See if the game is over

public static int checkWinner(int[][] board) {

// Check if someone won

// Check horizontals

// top row

if((board[0][0] == board[0][1]) && (board[0][1] == board[0][2]))

return board[0][0];

// middle row

if((board[1][0] == board[1][1]) && (board[1][1] == board[1][2]))

return board[1][0];

// bottom row

if((board[2][0] == board[2][1]) && (board[2][1] == board[2][2]))

return board[2][0];

// Check verticals

// left column

if((board[0][0] == board[1][0]) && (board[1][0] == board[2][0]))

return board[0][0];

// middle column

if((board[0][1] == board[1][1]) && (board[1][1] == board[2][1]))

return board[0][1];

// right column

if((board[0][2] == board[1][2]) && (board[1][2] == board[2][2]))

return board[0][2];

// Check diagonals

// one diagonal

if((board[0][0] == board[1][1]) && (board[1][1] == board[2][2]))

return board[0][0];

// the other diagonal

if((board[0][2] == board[1][1]) && (board[1][1] == board[2][0]))

return board[0][2];

// Check if the board is full

if(board[0][0] == EMPTY ||

board[0][1] == EMPTY ||

board[0][2] == EMPTY ||

board[1][0] == EMPTY ||

board[1][1] == EMPTY ||

board[1][2] == EMPTY ||

board[2][0] == EMPTY ||

board[2][1] == EMPTY ||

board[2][2] == EMPTY)

return NONE;

return STALEMATE;

}

// Generate a random computer move

public static int computer_move(int[][] board) {

int move = (int)(Math.random()*9);

while(board[move/3][move%3] != EMPTY)

move = (int)(Math.random()*9);

return move;

}

}

I hope this helps if you find any problem. Please comment below. Don't forget to give a thumbs up if you liked it. :)

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