Java程序打印倒序数字的直角三角形

编写一个Java程序，使用for循环打印倒序数字的直角三角形。

import java.util.Scanner;

public class RightTriangleNumReverse1 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		System.out.print("Reverse Right Triangle Number Pattern Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("Printing Right Triangle of Numbers in Reverse");
		
		for (int i = rows ; i >= 1; i-- ) 
		{
			for (int j = rows ; j >= i; j-- ) 	
			{
				System.out.print(j + " ");
			}
			System.out.println();
		}
	}
}

这个Java示例使用while循环显示直角三角形数字模式中倒序排列的数字。

import java.util.Scanner;

public class RightTriangleNumReverse2 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		System.out.print("Reverse Right Triangle Number Pattern Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("Printing Right Triangle of Numbers in Reverse");
		int i = rows, j;
		
		while (i >= 1 ) 
		{
			j = rows ;
			
			while(j >= i) 	
			{
				System.out.print(j + " ");
				j--;
			}
			System.out.println();
			i--;
		}
	}
}

Reverse Right Triangle Number Pattern Rows = 8
Printing Right Triangle of Numbers in Reverse
8 
8 7 
8 7 6 
8 7 6 5 
8 7 6 5 4 
8 7 6 5 4 3 
8 7 6 5 4 3 2 
8 7 6 5 4 3 2 1 

此程序使用do while循环以倒序模式打印数字直角三角形。

import java.util.Scanner;

public class RightTriangleNumReverse3 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		System.out.print("Reverse Right Triangle Number Pattern Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("Printing Right Triangle of Numbers in Reverse");
		int i = rows, j;
		
		do
		{
			j = rows ;
			
			do	
			{
				System.out.print(j + " ");

			} while(--j >= i);
			System.out.println();

		} while (--i >= 1 ) ;
	}
}

Reverse Right Triangle Number Pattern Rows = 14
Printing Right Triangle of Numbers in Reverse
14 
14 13 
14 13 12 
14 13 12 11 
14 13 12 11 10 
14 13 12 11 10 9 
14 13 12 11 10 9 8 
14 13 12 11 10 9 8 7 
14 13 12 11 10 9 8 7 6 
14 13 12 11 10 9 8 7 6 5 
14 13 12 11 10 9 8 7 6 5 4 
14 13 12 11 10 9 8 7 6 5 4 3 
14 13 12 11 10 9 8 7 6 5 4 3 2 
14 13 12 11 10 9 8 7 6 5 4 3 2 1