Java 打印字母金字塔图案程序

编写一个Java程序，使用for循环打印字母金字塔模式。

package Alphabets;

import java.util.Scanner;

public class PyramidAlphabets1 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		System.out.print("Enter Pyramid of Alphabets Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("Printing Pyramid Alphabets Pattern");
		
		int alphabet = 64;
		
		for (int i = 1; i <= rows; i++) 
		{
			for (int j = 1; j <= rows - i; j++) 	
			{
				System.out.print(" ");
			}
			for(int k = i; k > 0; k--)
			{
				System.out.print((char)(alphabet + k) );
			}
			for(int l = 2; l <= i; l++)
			{
				System.out.print((char)(alphabet + l));
			}
			System.out.println();
		}
	}
}

此示例使用while循环打印字母金字塔模式。

package Alphabets;

import java.util.Scanner;

public class PyramidAlphabets2 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		System.out.print("Enter Pyramid of Alphabets Rows = ");
		int rows = sc.nextInt();
		
		System.out.println("Printing Pyramid Alphabets Pattern");
		
		int i, j, k, l, alphabet = 64;
		i = 1;
		
		while( i <= rows) 
		{
			j = 1;
			while(j <= rows - i) 	
			{
				System.out.print(" ");
				j++;
			}
			
			k = i;
			while(k > 0)
			{
				System.out.print((char)(alphabet + k) );
				k--;
			}
			
			l = 2;
			while(l <= i)
			{
				System.out.print((char)(alphabet + l));
				l++;
			}
			System.out.println();
			i++;
		}
	}
}

Enter Pyramid of Alphabets Rows = 15
Printing Pyramid Alphabets Pattern
              A
             BAB
            CBABC
           DCBABCD
          EDCBABCDE
         FEDCBABCDEF
        GFEDCBABCDEFG
       HGFEDCBABCDEFGH
      IHGFEDCBABCDEFGHI
     JIHGFEDCBABCDEFGHIJ
    KJIHGFEDCBABCDEFGHIJK
   LKJIHGFEDCBABCDEFGHIJKL
  MLKJIHGFEDCBABCDEFGHIJKLM
 NMLKJIHGFEDCBABCDEFGHIJKLMN
ONMLKJIHGFEDCBABCDEFGHIJKLMNO