Java 打印镜像数字图案的三角形程序

编写一个 Java 程序，使用 for 循环打印镜像数字图案的三角形。

package Shapes3;

import java.util.Scanner;

public class TriangleMirroredNum1 {

	private static Scanner sc;
	
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		
		System.out.print("Enter Traingle Mirrored Numbers Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("Printing Traingle of Mirrored Numbers Pattern");
		
		for (int i = 1; i <= rows; i++ ) 
		{
			for (int j = rows; j > i; j-- ) 
			{
				System.out.print(" ");
			}
			for(int k = 1; k <= i; k++) 
			{
				System.out.print(k);
			}
			for(int l = i - 1; l >= 1; l--)
			{
				System.out.print(l);
			}
			System.out.println();
		}
	}
}

这个 Java 模式 示例 使用 while 循环打印镜像数字的三角形。

package Shapes3;

import java.util.Scanner;

public class TriangleMirroredNum2 {

	private static Scanner sc;
	
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		
		System.out.print("Enter Traingle Mirrored Numbers Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("Printing Traingle of Mirrored Numbers Pattern");
		int j, k, l, i = 1;
		
		while(i <= rows) 
		{
			j = rows;
			while(j > i) 
			{
				System.out.print(" ");
				j--;
			}
			
			k = 1; 
			while(k <= i) 
			{
				System.out.print(k);
				k++;
			}
			
			l = i - 1;
			while(l >= 1)
			{
				System.out.print(l);
				l--;
			}
			
			System.out.println();
			i++;
		}
	}
}

Enter Traingle Mirrored Numbers Rows = 9
Printing Traingle of Mirrored Numbers Pattern
        1
       121
      12321
     1234321
    123454321
   12345654321
  1234567654321
 123456787654321
12345678987654321