第六章第十七题（显示0和1构成的矩阵）(Display matrix of 0s and 1s)

第六章第十七题（显示0和1构成的矩阵）(Display matrix of 0s and 1s)

• *6.17（显示0和1构成的矩阵）编写一个方法，使用下面的方法头显示n * n的矩阵：
  public static void printMatrix(int n)
  每个元素都是随机产生的0或1。编写一个测试程序，提示用户输入n，显示一个n * n矩阵。
  以下是一个运行示例：
  Enter n:3
  0 1 0
  0 0 0
  1 1 1
  *6.17(Display matrix of 0s and 1s)Write a method that displays an n-by-n matrix using the following header:
  public static void printMatrix(int n)
  Each element is 0 or 1, which is generated randomly. Write a test program that prompts the user to enter n and displays an n-by-n matrix.
  Here is a sample run:
  Enter n:3
  0 1 0
  0 0 0
  1 1 1
• 参考代码：

package chapter06;

import java.util.Scanner;

public class Code_17 {
    
    
    public static void main(String[] args) {
    
    
        Scanner input = new Scanner(System.in);
        System.out.print("Enter n: ");
        int number = input.nextInt();
        printMatrix(number);
    }
    public static void printMatrix(int n){
    
    
        for (int i = 0;i < n;i++){
    
    
            for (int j = 0;j < n;j++){
    
    
                System.out.print((int)(Math.random() * 2) + " ");
            }
            System.out.print("\n");
        }
    }
}

• 结果显示：

Enter n: 3
1 1 0 
0 1 1 
0 1 0 

Process finished with exit code 0