hw 4 -works

/*
 * Name: Nate Wheeler
 * Date: Oct 16, 2016
 * Course Number: csc220
 * Course Name: Data Structures
 * Problem Number: hw 4
 * Email: nate23nate23@gmail.com
 * Short Description of the Problem:
 * Write a class called TicTacToe to handle the
 * basics of a two-player game of Tic-Tac-Toe.
 */
package compsci220;

public class TicTacToe {
    char[][] board;
    int turns;

    public TicTacToe() {
        board = new char[3][3];
        turns = 0;
        for (int i = 0; i < board.length; i++) {
            for (int j = 0; j < board[i].length; j++) {
                board[i][j] = ' ';
            }
        }
    }

    public int getTurns() {
        return this.turns;
    }

    public char getPlayerAt(int r, int c) {
        return this.board[r][c];
    }

    public String toString() {
        String array = "";
        for (int i = 0; i < board.length; i++) {
            for (int j = 0; j < board[0].length; j++) {
                array += " " + this.board[i][j];
            }
            array += "\n";
        }
        return array;
    }

    public boolean isFull() {
        if (this.turns == 9)
            return true;
        else
            return false;
    }

    public boolean isValid(int r, int c) {
        if (0 <= r && r <= 2 && c >= 0 && c <= 2)
            return true;
        else
            return false;
    }

    public boolean isTied() {
        if (this.isFull() == true && this.isWinner('X') == false && this.isWinner('O') == false)
            return true;
        else
            return false;
    }

    public boolean isWinner(char p) {
        Character.toUpperCase(p);
        if (p == this.board[0][0] && p == this.board[0][1] && p == this.board[0][2])
            return true;
        if (p == this.board[1][0] && p == this.board[1][1] && p == this.board[1][2])
            return true;
        if (p == this.board[2][0] && p == this.board[2][1] && p == this.board[2][2])
            return true;
        if (p == this.board[0][0] && p == this.board[1][0] && p == this.board[2][0])
            return true;
        if (p == this.board[0][1] && p == this.board[1][1] && p == this.board[2][1])
            return true;
        if (p == this.board[0][2] && p == this.board[1][2] && p == this.board[2][2])
            return true;
        if (p == this.board[0][0] && p == this.board[1][1] && p == this.board[2][2])
            return true;
        if (p == this.board[0][2] && p == this.board[1][1] && p == this.board[2][0])
            return true;
        return false;

    }

    public void playMove(char p, int r, int c) {
        Character.toUpperCase(p);
        this.turns++;
        if (p == 'X' || p == 'O')
            this.board[r][c] = p;
    }
}