打印指数增长的星形图案的Java程序

编写一个Java程序，使用for循环打印指数增长的星形图案。它使用嵌套的for循环，其中第一个for循环从零到给定的行进行迭代。然后，Java嵌套循环从1到i的幂值进行迭代，每次迭代都会打印出指数级增长的星形图案。

package ShapePrograms;

import java.util.Scanner;

public class ExponentiallyIncrease1 { private static Scanner sc;

public static void main(String\[\] args) {
	sc = new Scanner(System.in);
	
	System.out.print("Enter Exponentially Increased Pattern Rows = ");
	int rows = sc.nextInt();
	
	System.out.println("Exponentially Increased Rectangle Star Pattern");
	
	for (int i = 0; i < rows; i++ ) 
	{
		for (int j = 1 ; j <= Math.pow(2, i); j++ ) 
		{
			System.out.print("\*");
		}
		System.out.println();
	}
}

在这个Java指数增长的星形图案程序中，我们用一个while循环代替了for循环。

pacakge ShapePrograms;

import java.util.Scanner;

public class ExponentiallyIncrease2 { private static Scanner sc;

public static void main(String\[\] args) {
	sc = new Scanner(System.in);
	
	System.out.print("Enter Exponentially Increased Pattern Rows = ");
	int rows = sc.nextInt();
	
	System.out.println("Printing Exponentially Increased Rectangle Star Pattern");
	
	int i = 0, j;
	while( i < rows) 
	{
		j = 1 ;
		while ( j <= Math.pow(2, i) ) 
		{
			System.out.print("\*");
			j++;
		}
		System.out.println();
		i++ ;
	}
}

Enter Exponentially Increased Pattern Rows = 7
Printing Exponentially Increased Rectangle Star Pattern
*
**
****
********
****************
********************************
****************************************************************

使用do while循环打印指数增加的星形图案的Java程序

pacakge ShapePrograms;

import java.util.Scanner;

public class ExponentiallyIncrease3 { private static Scanner sc;

public static void main(String\[\] args) {
	sc = new Scanner(System.in);
	
	int i = 0, j;
	
	System.out.print("Enter Exponentially Increased Pattern Rows = ");
	int rows = sc.nextInt();
	
	System.out.println("Printing Exponentially Increased Rectangle Star Pattern");

	do
	{
		j = 1 ;
		do
		{
			System.out.print("\*");
		} while ( ++j <= Math.pow(2, i) );
		System.out.println();
	} while( ++i < rows) ;
}

Enter Exponentially Increased Pattern Rows = 4
Printing Exponentially Increased Rectangle Star Pattern
*
**
****
********

在这个Java例子中，ExponentiallyIncreasedPattern函数打印了一个给定符号的指数增加图案。

package ShapePrograms;

import java.util.Scanner;

public class ExponentiallyIncrease4 { private static Scanner sc;

public static void main(String\[\] args) {
	sc = new Scanner(System.in);
	
	System.out.print("Enter Exponentially Increased Pattern Rows = ");
	int rows = sc.nextInt();
	
	System.out.print("Enter Character for Exponentially Increased Pattern = ");
	char ch = sc.next().charAt(0);
	
	System.out.println("Printing Exponentially Increased Rectangle Star Pattern");
	ExponentiallyIncreasedPattern(rows, ch);
	
}

public static void ExponentiallyIncreasedPattern(int rows, char ch) {
	for (int i = 0; i < rows; i++ ) 
	{
		for (int j = 1 ; j <= Math.pow(2, i); j++ ) 
		{
			System.out.print(ch);
		}
		System.out.println();
	}
}

Enter Exponentially Increased Pattern Rows = 7
Enter Character for Exponentially Increased Pattern = #
Printing Exponentially Increased Rectangle Star Pattern
#
##
####
########
################
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