Java 打印字母 O 图案程序

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

在此字母 O 形状或图案 程序中,我们将 for 循环替换为 while 循环来在每个位置打印星号。有关更多 字母图案星号图案程序,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 Rows = ");
rows = sc.nextInt();

i = 0;
while ( i < rows)
{
j = 0;
while ( j <= rows)
{
if((i == 0 || i == rows - 1) && (0 < j && j < rows - 1))
{
System.out.printf("*");
}
else if ((j == 0 || j == rows - 1) && (0 < i && i < rows - 1))
{
System.out.printf("*");
}
else
{
System.out.printf(" ");
}
j++;
}
System.out.println();
i++;
}
}
}
Enter Rows = 17
 ***************  
*               * 
*               * 
*               * 
*               * 
*               * 
*               * 
*               * 
*               * 
*               * 
*               * 
*               * 
*               * 
*               * 
*               * 
*               * 
 ***************  

在此程序中,我们创建了一个 AlphabetOShape 函数来打印字母 O 图案或用星号填充的在行和列中的图案。

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);

AlphabetOShape(rows, a);
}

public static void AlphabetOShape(int rows, char a)
{
for (int i = 0; i < rows; i++)
{
for (int j = 0; j <= rows; j++)
{
if(((i == 0 || i == rows - 1) && (0 < j && j < rows - 1)) ||
((j == 0 || j == rows - 1) && (0 < i && i < rows - 1)))
{
System.out.printf("%c", a);
}
else
{
System.out.printf(" ");
}
}
System.out.println();
}
}
}
Print Alphabet O Pattern