Java 打印字母 D 图案的程序

在此 Java 图案程序中,我们展示了使用 for 循环、while 循环和函数打印字母 D 形状或图案中的星号的步骤。

import java.util.Scanner;

public class Example
{
private static Scanner sc;

public static void main(String[] args)
{
sc = new Scanner(System.in);

System.out.print("Enter Rows = ");
int rows = sc.nextInt();

for (int i = 0; i < rows; i++)
{
System.out.printf("*");

for (int j = 0; j < rows; j++)
{
if ((i == 0 || i == rows - 1 ) && (j < rows - 2))
{
System.out.printf("*");
}
else if (i != 0 && i != rows - 1 && j == rows - 2)
{
System.out.printf("*");
}
else
{
System.out.printf(" ");
}
}
System.out.println();
}
}
}
Enter Rows = 15
**************  
*             * 
*             * 
*             * 
*             * 
*             * 
*             * 
*             * 
*             * 
*             * 
*             * 
*             * 
*             * 
*             * 
**************  

在此字母 D 形状或图案 程序 中,我们用 while 循环替换了 for 循环,以在每个位置打印星号。有关更多字母模式和星号模式程序,请使用超链接。

import java.util.Scanner;

public class Example
{
private static Scanner sc;

public static void main(String[] args)
{
sc = new Scanner(System.in);
int rows, i, j;

System.out.print("Enter Numbers of Rows = ");
rows = sc.nextInt();

i = 0;
while (i < rows)
{
if (i > 0 && i < rows - 1)
{
System.out.printf("*");
}
j = 0;
while ( j < rows / 2)
{
if ((i == 0 || i == rows - 1 || j == rows / 2 - 1))
{
System.out.printf("*");
}
else
{
System.out.printf(" ");
}
j++;
}
System.out.println();
i++;
}
}
}
Enter Numbers of Rows = 10
*****
*    *
*    *
*    *
*    *
*    *
*    *
*    *
*    *
*****

在此程序中,我们创建了一个 AlphabetDShape 函数来打印在行和列中用星号填充的字母 D 图案或形状。

import java.util.Scanner;

public class Example
{
private static Scanner sc;

public static void main(String[] args)
{
sc = new Scanner(System.in);

System.out.print("Enter Rows = ");
int rows = sc.nextInt();

System.out.print("Enter Character = ");
char a = sc.next().charAt(0);

AlphabetDShape(rows, a);
}
public static void AlphabetDShape(int rows, char a)
{
for (int i = 0; i < rows; i++)
{
System.out.printf("%c", a);

for (int j = 0; j < rows; j++)
{
if ((i == 0 || i == rows - 1 ) && (j < rows - 2))
{
System.out.printf("%c", a);
}
else if (i != 0 && i != rows - 1 && j == rows - 2)
{
System.out.printf("%c", a);
}
else
{
System.out.printf(" ");
}
}
System.out.println();
}
}
}
Print Alphabet D Pattern