[java] 배열 연습문제 #1

오늘은 「java_an_introduction_to_problem_solving_and_programming_6th_edition」 564페이지 7번 문제를 풀어보겠습니다.

<문제>

출처: java_an_introduction_to_problem_solving_and_programming_6th_edition 

 

tictactoe라는 게임을 만들어 보겠습니다.

tictactoe는 [3][3] 배열에서 가로, 세로 대각선 중 한 줄을 먼저 완성하는 사람이 이기는 게임입니다.

빙고와 유사하다고 생각하시면 됩니다.

 

 

import java.util.Scanner;
public class TicTacToe {
	static char[][] board = new char[3][3];
	char turn;
	static int count;
	public void addMove(int i, int j) {
		board[i][j] = turn;
	}
	public void display() {
		for(int i=0;i<3;i++) {
			for(int j=0;j<3;j++) {
				System.out.print(board[i][j]);
			}
			System.out.println();
		}
	}
	public char turn() {
			if(count%2==0) {
				turn = 'x';
				System.out.println("x turn");
			}
			else if(count%2!=0){
				turn ='o';
				System.out.println("o turn");
			}
		return turn;
	}
	public int winner() {
		int result = 1;
		if((board[0][0]=='x' && board[0][1]=='x' && board[0][2]=='x')||
			(board[1][0]=='x' && board[1][1]=='x' && board[1][2]=='x')||
			(board[2][0]=='x' && board[2][1]=='x' && board[2][2]=='x')||
			(board[0][0]=='x' && board[1][0]=='x' && board[2][0]=='x')||
			(board[0][1]=='x' && board[1][1]=='x' && board[2][1]=='x')||
			(board[0][2]=='x' && board[1][2]=='x' && board[2][2]=='x')||
			(board[0][0]=='x' && board[1][1]=='x' && board[2][2]=='x')||
			(board[0][2]=='x' && board[1][1]=='x' && board[2][0]=='x')) {
			System.out.println("x win");
			result = 0;
		}
			
		else if((board[0][0]=='o' && board[0][1]=='o' && board[0][2]=='o')||
				(board[1][0]=='o' && board[1][1]=='o' && board[1][2]=='o')||
				(board[2][0]=='o' && board[2][1]=='o' && board[2][2]=='o')||
				(board[0][0]=='o' && board[1][0]=='o' && board[2][0]=='o')||
				(board[0][1]=='o' && board[1][1]=='o' && board[2][1]=='o')||
				(board[0][2]=='o' && board[1][2]=='o' && board[2][2]=='o')||
				(board[0][0]=='o' && board[1][1]=='o' && board[2][2]=='o')||
				(board[0][2]=='o' && board[1][1]=='o' && board[2][0]=='o')) {
			System.out.println("o win");
			result = 0;
		}
		return result;
	}
	
	public void reinitialize() {
		for(int i=0;i<3;i++) {
			for(int j=0;j<3;j++) {
				board[i][j]=0;
			}
		}
	}
	
	public static void main(String[] args) {
		int i,j;
		TicTacToe t1 = new TicTacToe();
		while(true) {
			t1.reinitialize();
			for(count = 0; count<10;count++) {
				t1.turn();
				while(true) {
					System.out.println("enter location(i,j<3): ");
					Scanner keyboard = new Scanner(System.in);
					i = keyboard.nextInt();
					j = keyboard.nextInt();
					if(i>2 || j>2)
						System.out.println("bigger than 2");
					else if(board[i][j]!=0)
						System.out.println("already in");
					else
						break;
				}
				t1.addMove(i, j);
				t1.display();
				if(t1.winner() == 0)break;
				if(count>=8) {
					System.out.println("no winner or loser");
					break;
				}
				
			}
			
			char answer;
			System.out.println("again[y/n]?: ");
			Scanner keyboard = new Scanner(System.in);
			answer = keyboard.next().charAt(0);
			if(answer!='y')break;
			
		}

	}

}