用Java程序打印三角形字母的反向图案

编写一个Java程序，使用for循环来打印三角形字母的反向图案。

package Alphabets; 
import java.util.Scanner;

public class TriangleAlpReverse1 {

private static Scanner sc;

public static void main(String\[\] args) {
	
	sc = new Scanner(System.in);	
	
	System.out.print("Enter Triangle of Alphabets in Reverse Rows = ");
	int rows = sc.nextInt();
	
	System.out.println("Printing Triangle of Alphabets in Reverse Order");
	
	int alphabet = 65;
	
	for (int i = rows - 1; i >= 0; i--) 
	{
		for (int j = 0; j < i; j++ ) 	
		{
			System.out.print(" ");
		}
		for(int k = i; k <= rows - 1; k++)
		{
			System.out.print((char)(alphabet + k) + " ");
		}
		System.out.println();
	}
}

package Alphabets;

import java.util.Scanner;

public class TriangleAlpReverse2 {

```pgsql
private static Scanner sc;

public static void main(String\[\] args) {
	
	sc = new Scanner(System.in);	
	
	System.out.print("Enter Triangle of Alphabets in Reverse Rows = ");
	int rows = sc.nextInt();
	
	System.out.println("Printing Triangle of Alphabets in Reverse Order");
	
	int i, j, k, alphabet = 65;
	
	i = rows - 1;
	while(i >= 0) 
	{
		
		j = 0;
		while( j < i ) 	
		{
			System.out.print(" ");
			j++;
		}
		
		k = i;
		while(k <= rows - 1)
		{
			System.out.print((char)(alphabet + k) + " ");
			k++;
		}
		
		System.out.println();
		i--;
	}
}

Enter Triangle of Alphabets in Reverse Rows = 13
Printing Triangle of Alphabets in Reverse Order
            M 
           L M 
          K L M 
         J K L M 
        I J K L M 
       H I J K L M 
      G H I J K L M 
     F G H I J K L M 
    E F G H I J K L M 
   D E F G H I J K L M 
  C D E F G H I J K L M 
 B C D E F G H I J K L M 
A B C D E F G H I J K L M 

这个Java模式的例子使用do while循环按降序或逆序打印字母的三角形。

package Alphabets;

import java.util.Scanner;

public class TriangleAlpReverse3 {

private static Scanner sc;

public static void main(String\[\] args) {
	
	sc = new Scanner(System.in);	
	
	System.out.print("Enter Triangle of Alphabets in Reverse Rows = ");
	int rows = sc.nextInt();
	
	System.out.println("Printing Triangle of Alphabets in Reverse Order");
	
	int i, j, k, alphabet = 65;
	
	i = rows - 1;
	do 
	{
		
		j = 0;
		do	
		{
			System.out.print(" ");
			
		} while( j++ < i ) ;
		
		k = i;
		do
		{
			System.out.print((char)(alphabet + k) + " ");

		} while(++k <= rows - 1);
		
		System.out.println();

	} while(--i >= 0);
}

Enter Triangle of Alphabets in Reverse Rows = 16
Printing Triangle of Alphabets in Reverse Order
                P 
               O P 
              N O P 
             M N O P 
            L M N O P 
           K L M N O P 
          J K L M N O P 
         I J K L M N O P 
        H I J K L M N O P 
       G H I J K L M N O P 
      F G H I J K L M N O P 
     E F G H I J K L M N O P 
    D E F G H I J K L M N O P 
   C D E F G H I J K L M N O P 
  B C D E F G H I J K L M N O P 
 A B C D E F G H I J K L M N O P