java - 随用户输入而变化的二维数组

Question

我被要求制作一个程序来打印 5x5 网格，允许用户输入一个整数来确定“x”的放置位置。例如，如果用户输入 1，它将打印出来。

x 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0

这是我的代码。我已经构建了数组，但我似乎无法让它打印出输入整数起作用的数组。另外，我是否会一次又一次地循环相同的代码，直到有人获胜或所有空格都被填满。

import java.util.Scanner;
public class Grade {

    static Scanner input = new Scanner(System. in );
    public static void main(String[] args) {
        final int rows = 5;
        final int columns = 5;
        int one;
        int two;

        int[][] grid = new int[rows][columns];

        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < columns; j++) {
                System.out.print(grid[i][j] + " ");
            }
            System.out.println("");

        }

        System.out.println("player one choose your position");
        one = input.nextInt();

        while (one > 25 || one < 1) {
            System.out.println("error");
            while (!input.hasNextInt()) {
                input.next();
            }
            one = input.nextInt();
        }

        System.out.println("player two choose your position");
        two = input.nextInt();

        while (two > 25 || two < 1) {
            System.out.println("error");
            while (!input.hasNextInt()) {
                input.next();
            }
            two = input.nextInt();
        }

        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < columns; j++) {
                System.out.print(grid[i][j] + " ");
            }
            System.out.println("" + one);
        }
    }
}

Answer 1

下面发布了执行您所要求的操作所需的代码。由于 x 是代码中的 int，因此您需要一种算法来实现它，以便您可以在 int[][] 中正确设置位置。

import java.util.Scanner;

public class GradeSO
{
    Scanner input = new Scanner(System. in);

    int remainder;
    int down;
    int column;
    int row;

    int rows = 5;
    int columns = 5;
    int one;
    int two;

    int[][] grid;

    public void makeLocation(int x, int r, int c)
    {
        remainder = x % c;
        down = (int) x / r;

        if(x % c!=0)
        {
            column = remainder-1;
        }
        else
        {
            column = remainder;
        }

        if(x % c==0)
        {
            row=down-1;
            column = remainder+4;
        }
        else
        {
            row=down;
        }
    }

    public void makeArray()
    {
        grid = new int[rows][columns];

        System.out.println("Player 1: Please chose a number between 1 and 25");
        one = input.nextInt();

        while (one > 25 || one < 1)
        {
            System.out.println("Error: Invalid Number");
            System.out.println("Player 1: Please enter a number between 1 and 25");
            while (!input.hasNextInt()) {
                input.next();
            }
            one = input.nextInt();
        }

        makeLocation(one,columns,rows);
        grid[row][column]= 1;

        System.out.println("Player 2: Please chose a number between 1 and 25");
        two = input.nextInt();

        while (two > 25 || two < 1)
        {
            System.out.println("Error: Invalid Number");
            System.out.println("Player 2: Please enter a number between 1 and 25");
            while (!input.hasNextInt()) {
                input.next();
            }
            two = input.nextInt();
        }

        makeLocation(two,columns,rows);
        grid[row][column]= 2;
    }

    public void displayArray()
    {
        for (int[] smallGrid: grid) 
        {
            for (int elem: smallGrid) 
            {
                System.out.print(elem);
            }
            System.out.println();
        }
    }

    public static void main(String[] args)
    {
        GradeSO gSO = new GradeSO();
        gSO.makeArray();
        gSO.displayArray();
    }
}