打印V星图案的Java程序

编写一个Java程序，使用for循环打印V星图案。

package Shapes3;

import java.util.Scanner;

public class VStarPattern1 { private static Scanner sc;

public static void main(String\[\] args) {
	sc = new Scanner(System.in);
	
	System.out.print("Enter V Shape Star Pattern Rows = ");
	int rows = sc.nextInt();
	
	System.out.println("Printing V Shape Star Pattern");
	
	for (int i = 1 ; i <= rows; i++ ) 
	{
		for (int j = 1 ; j <= i; j++ ) 
		{
			System.out.print("\*");
		}
		for (int k = 1 ; k <= 2 \* (rows - i); k++ ) 
		{
			System.out.print(" ");
		}
		for (int l = 1 ; l <= i; l++ ) 
		{
			System.out.print("\*");
		}
		System.out.println();
	}
}

使用while循环打印V型星体图案的Java程序

package Shapes3;

import java.util.Scanner;

public class VStarPattern2 { private static Scanner sc;

public static void main(String\[\] args) {
	sc = new Scanner(System.in);
	
	int i, j, k, l;
	
	System.out.print("Enter V Shape Star Pattern Rows = ");
	int rows = sc.nextInt();
	
	System.out.println("Printing V Shape Star Pattern");
	i = 1 ;
	while( i <= rows) 
	{
		j = 1 ;
		while( j <= i ) 
		{
			System.out.print("\*");
			j++;

		}
		k = 1 ;
		while( k <= 2 \* (rows - i) ) 
		{
			System.out.print(" ");
			k++;
		}
		l = 1 ;
		while( l <= i ) 
		{
			System.out.print("\*");
			l++;
		}
		System.out.println();
		i++;
	}
}

Enter V Shape Star Pattern Rows = 12
Printing V Shape Star Pattern
*                      *
**                    **
***                  ***
****                ****
*****              *****
******            ******
*******          *******
********        ********
*********      *********
**********    **********
***********  ***********
************************

这个Java例子使用do while循环来显示按字母顺序排列的V星图案。

package Shapes3;

import java.util.Scanner;

public class VStarPattern3 { private static Scanner sc;

public static void main(String\[\] args) {
	sc = new Scanner(System.in);
	
	int i, j, k, l;
	
	System.out.print("Enter V Shape Star Pattern Rows = ");
	int rows = sc.nextInt();
	
	System.out.println("Printing V Shape Star Pattern");
	i = 1 ;
	do 
	{
		j = 1 ;
		do
		{
			System.out.print("\*");

		} while( ++j <= i );
		k = 1 ;
		while(k <= 2 \* (rows - i))
		{
			System.out.print(" ");
			k++;
		}
		l = 1 ;
		do
		{
			System.out.print("\*");
		} while( ++l <= i ) ;
		System.out.println();
	} while(++i <= rows);
}

Enter V Shape Star Pattern Rows = 16
Printing V Shape Star Pattern
*                              *
**                            **
***                          ***
****                        ****
*****                      *****
******                    ******
*******                  *******
********                ********
*********              *********
**********            **********
***********          ***********
************        ************
*************      *************
**************    **************
***************  ***************
********************************

在这个Java例子中，VShapePattern函数允许输入任何字符并打印出给定字符的V型。

package Shapes3.X

import java.util.Scanner;

public class VStarPattern4 { private static Scanner sc;


public static void main(String\[\] args) {
	sc = new Scanner(System.in);
	
	System.out.print("Enter V Shape Star Pattern Rows = ");
	int rows = sc.nextInt();
	
	System.out.print("Enter Character for V Pattern = ");
	char ch = sc.next().charAt(0);
	
	System.out.println("Printing V Shape Pattern");
	VShapePattern(rows, ch);
}
public static void VShapePattern(int rows, char ch) 
{
	for (int i = 1 ; i <= rows; i++ ) 
	{
		for (int j = 1 ; j <= i; j++ ) 
		{
			System.out.print(ch);

		}
		for (int k = 1 ; k <= 2 \* (rows - i); k++ ) 
		{
			System.out.print(" ");
		}
		for (int l = 1 ; l <= i; l++ ) 
		{
			System.out.print(ch);
		}
		System.out.println();
	}
}

Enter V Shape Star Pattern Rows = 19
Enter Character for V Pattern = $
Printing V Shape Pattern
$                                    $
$$                                  $$
$$$                                $$$
$$$$                              $$$$
$$$$$                            $$$$$
$$$$$$                          $$$$$$
$$$$$$$                        $$$$$$$
$$$$$$$$                      $$$$$$$$
$$$$$$$$$                    $$$$$$$$$
$$$$$$$$$$                  $$$$$$$$$$
$$$$$$$$$$$                $$$$$$$$$$$
$$$$$$$$$$$$              $$$$$$$$$$$$
$$$$$$$$$$$$$            $$$$$$$$$$$$$
$$$$$$$$$$$$$$          $$$$$$$$$$$$$$
$$$$$$$$$$$$$$$        $$$$$$$$$$$$$$$
$$$$$$$$$$$$$$$$      $$$$$$$$$$$$$$$$
$$$$$$$$$$$$$$$$$    $$$$$$$$$$$$$$$$$
$$$$$$$$$$$$$$$$$$  $$$$$$$$$$$$$$$$$$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$