In Java code: In Java code: In a game of Tic Tac Toe, two players take turns making an available cell in a 3 x 3 grid with their respective tokens (either X or O). When one player has placed three tokens in a horizontal, vertical, or diagonal row on the grid, the game is over and that player has won. A stalemate occurs when all the cells on the grid have been filled with tokens and neither player has achieved a win. Code a program that emulates a Tic Tac Toe game. When you are done, a typical session will look like this: Welcome to tic-tac-toe. Enter coordinates for your move following the X and O prompts. 1 2 3 A | | ----- B | | ----- C | | X:A2 1 2 3 A |X| ----- B | | ----- C | | O:B3 1 2 3 A |X| ----- B | |O ----- C | | And so on. Illegal moves will prompt the user again for a new move. A win or a stalemate will be announced, mentioning the winning side if any. The program will terminate whenever a single game is complete. For this lab, you will be provided with a base file to work with. The base file can be downloaded from: https://github.com/victoryu/CIS35A-LabsLinks to an external site. You will add and/or modify the code, as instructed below. Do not change the overall structure of the program. Just fill in with your code at TODO and Step #. This file has the general framework of the TicTacToe class. An object of this class will represent a tic-tac-toe "board". The board will be represented internally by a two dimensional array of characters (3 x 3), and by a character indicating who's turn it is ('X' or 'O'). These are stored in the class instance variables as follows. private char[][] board; private char player; // 'X' or 'O' You will need to define the following methods: 1. A constructor: public TicTacToe() to create an empty board, with initial value of a space (' ') 2. play method public boolean play(String position) if position represents a valid move (e.g., A1, B3), add the current player's symbol to the board and return true. Otherwise, return false. 3. switchTurn method public void switchTurn() switches the current player from X to O, or vice versa. 4. won method public boolean won() Returns true if the current player has filled three in a row, column or either diagonal. Otherwise, return false. 5. stalemate method public boolean stalemate() Returns true if there are no places left to move; 6. printBoard method public void print() prints the current board 7. Use the following test code in your main method to create the TicTacToe object and print it using the printBoard method given, so as to test your code. Your printBoard method should produce the first board in the example above. public static void main(String[] args) { Scanner in = new Scanner(System.in); TicTacToe game = new TicTacToe(); System.out.println("Welcome to Tic-tac-toe"); System.out.println("Enter coordinates for your move following the X and O prompts"); while(!game.stalemate()) { game.print(); System.out.print(game.getPlayer() + ":"); //Loop while the method play does not return true when given their move. //Body of loop should ask for a different move while(!game.play(in.next())) { System.out.println("Illegal move. Enter your move."); System.out.print(game.getPlayer() + ":"); } //If the game is won, call break; if(game.won()) break; //Switch the turn game.switchTurn(); } game.print(); if(game.won()) { System.out.println("Player "+game.getPlayer()+" Wins!!!!"); } else { System.out.println("Stalemate"); } } Test the following cases: 1. A player makes a legal movement; 2. A player makes an illegal movement; 3. Player X wins 4. Player X loses 5. Stalemate (neither player wins)
Control structures
Control structures are block of statements that analyze the value of variables and determine the flow of execution based on those values. When a program is running, the CPU executes the code line by line. After sometime, the program reaches the point where it has to make a decision on whether it has to go to another part of the code or repeat execution of certain part of the code. These results affect the flow of the program's code and these are called control structures.
Switch Statement
The switch statement is a key feature that is used by the programmers a lot in the world of programming and coding, as well as in information technology in general. The switch statement is a selection control mechanism that allows the variable value to change the order of the individual statements in the software execution via search.
In Java code:
In Java code:
In a game of Tic Tac Toe, two players take turns making an available cell in a 3 x 3 grid with their respective tokens (either X or O). When one player has placed three tokens in a horizontal, vertical, or diagonal row on the grid, the game is over and that player has won. A stalemate occurs when all the cells on the grid have been filled with tokens and neither player has achieved a win.
Code a program that emulates a Tic Tac Toe game.
When you are done, a typical session will look like this:
Welcome to tic-tac-toe.
Enter coordinates for your move following the X and O prompts.
1 2 3
A | |
-----
B | |
-----
C | |
X:A2
1 2 3
A |X|
-----
B | |
-----
C | |
O:B3
1 2 3
A |X|
-----
B | |O
-----
C | |
And so on. Illegal moves will prompt the user again for a new move. A win or a stalemate will be announced, mentioning the winning side if any. The program will terminate whenever a single game is complete.
For this lab, you will be provided with a base file to work with. The base file can be downloaded from:
https://github.com/victoryu/CIS35A-LabsLinks to an external site.
You will add and/or modify the code, as instructed below. Do not change the overall structure of the program. Just fill in with your code at TODO and Step #.
This file has the general framework of the TicTacToe class. An object of this class will represent a tic-tac-toe "board". The board will be represented internally by a two dimensional array of characters (3 x 3), and by a character indicating who's turn it is ('X' or 'O'). These are stored in the class instance variables as follows.
private char[][] board;
private char player; // 'X' or 'O'
You will need to define the following methods:
1. A constructor:
public TicTacToe()
to create an empty board, with initial value of a space (' ')
2. play method
public boolean play(String position)
if position represents a valid move (e.g., A1, B3), add the current player's symbol to the board and return true. Otherwise, return false.
3. switchTurn method
public void switchTurn()
switches the current player from X to O, or vice versa.
4. won method
public boolean won()
Returns true if the current player has filled three in a row, column or either diagonal. Otherwise, return false.
5. stalemate method
public boolean stalemate()
Returns true if there are no places left to move;
6. printBoard method
public void print()
prints the current board
7. Use the following test code in your main method to create the TicTacToe object and print it using the printBoard method given, so as to test your code. Your printBoard method should produce the first board in the example above.
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
TicTacToe game = new TicTacToe();
System.out.println("Welcome to Tic-tac-toe");
System.out.println("Enter coordinates for your move following the X and O prompts");
while(!game.stalemate())
{
game.print();
System.out.print(game.getPlayer() + ":");
//Loop while the method play does not return true when given their move.
//Body of loop should ask for a different move
while(!game.play(in.next()))
{
System.out.println("Illegal move. Enter your move.");
System.out.print(game.getPlayer() + ":");
}
//If the game is won, call break;
if(game.won())
break;
//Switch the turn
game.switchTurn();
}
game.print();
if(game.won())
{
System.out.println("Player "+game.getPlayer()+" Wins!!!!");
}
else
{
System.out.println("Stalemate");
}
}
Test the following cases:
1. A player makes a legal movement;
2. A player makes an illegal movement;
3. Player X wins
4. Player X loses
5. Stalemate (neither player wins)
Algorithm:
1. Create a 3x3 board array initialized with empty spaces.
2. Set the initial player to X.
3. Create a loop to prompt the user for input and check if the coordinates are valid.
4. Check if the chosen cell is empty.
5. Switch turns between X and O.
6. Check if a player has won the game.
7. Check for a stalemate.
8. Print the board.
9. If a player has won, print the winner. Otherwise, print a stalemate.
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