在java中使用Scanner时如何使用空格键分隔新行和列

Question

我正在制作这样的黑白棋游戏：

import java.util.Arrays;
import java.util.Scanner;
public class test{

    public static Scanner sc = new Scanner(System.in);

    public static void main(String[] args) {

    System.out.print("Please enter the board size (4 or above and even number) : ");
    int num = sc.nextInt();
    int rows = num; // Number of rows 
    int cols = num; // Number of columns 
    if (num % 2 == 1 || num < 4) {
        System.out.println("Error - input number should be 4 or above and even number.");
    } else {
        int[][] reversigame = new int[rows][cols];
        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < cols; j++) {
                System.out.print(reversigame[i][j] + " ");
            }
            reversigame[num - num / 2][num - num / 2] = 1;
            reversigame[(num - num / 2) - 1][(num - num / 2) - 1] = 1;
            reversigame[(num - num / 2)][(num - num / 2) - 1] = 2;
            reversigame[(num - num / 2) - 1][(num - num / 2)] = 2;
            System.out.println();
        }

但我想在使用扫描仪时使用空格键来分隔新的行和列，如下所示：

System.out.print("Please enter the position of '1' (row col): ");
int bcp = sc.nextInt();//bcp=black chess place
int b = 1;//black chess = 1
String[] digits = String.valueOf(bcp).split(" ");

但在我执行下一步时无法将其更改为行和列：

if (bcp > 5 || bcp < 0) {/*Control variables between 0 and 5*/
System.out.println("Error - input number should be 0 to 5!");

            }
            for (; reversigame[bcp  + 1][bcp] == 2 || reversigame[bcp][bcp + 1] == 2 || reversigame[bcp - 1][bcp] == 2 || reversigame[bcp][bcp + 1] == 2;) {/*Check the black chess is or is't near the white chess*/
                reversigame[bcp][bcp] = b;
                System.out.println(Arrays.deepToString(reversigame));
                if (reversigame[bcp + 1][bcp] != 2 || reversigame[bcp][bcp+ 1] != 2 || reversigame[bcp - 1][bcp] != 2 || reversigame[bcp][bcp + 1] != 2) {
                    System.out.println("Error - invalid move");
                    break;
                }
            }

那么，如何在一个句子中添加行和列，同时使用空格键分隔它们？

Answer 1

您可以用空格分隔数字并按顺序读取两个整数：

Scanner scanner = new Scanner(System.in);
int a = scanner.nextInt();
int b = scanner.nextInt();
System.out.println("result = " + (a + b));

输出如下：

2 5
result = 7