Question

鉴于我目前的代码，如何以矩阵格式输出？我当前的输出方法只是直线列出数组。但是我需要将它们堆叠在相应的输入参数中，因此3x3输入会产生3x3输出。谢谢！

import java.util.Scanner;

Answer 1

for(int row = 0; row < rows; row++){
    for( int column = 0; column < columns; column++){
        System.out.print(array2d[row][column] + " ");
    }
    System.out.println();
}

这将打印出一行一行，然后移到下一行并打印出其内容等等......使用您提供的代码进行测试并运行。

编辑 - 添加了您想要的代码：

public static void main(String[] args) {

    Scanner scan =new Scanner(System.in); //creates scanner object

    System.out.println("How many rows to fill?"); //prompts user how many numbers they want to store in array
    int rows = scan.nextInt(); //takes input for response

    System.out.println("How many columns to fill?");
    int columns = scan.nextInt();
    int[][] array2d=new int[rows][columns]; //array for the elements

    for(int row=0;row<rows;row++) 
        for (int column=0; column < columns; column++)
        {
        System.out.println("Enter Element #" + row + column + ": "); //Stops at each element for next input
        array2d[row][column]=scan.nextInt(); //Takes in current input
        }

    System.out.println(Arrays.deepToString(array2d));

    String[][] split = new String[1][rows];

    split[0] = (Arrays.deepToString(array2d)).split(Pattern.quote("], [")); //split at the comma

    for(int row = 0; row < rows; row++){
        System.out.println(split[0][row]);
    }

    scan.close();
}

Answer 2

for (int i =0; i < rows; i++) { 
    for (int j = 0; j < columns ; j++) { 
        System.out.print(" " + array2d[i][j]); 
    } 
    System.out.println(""); 
}

将自定义二维阵列打印为矩阵

2 个答案: