Java程序打印空心直角三角形星号图案
在这篇文章中,我们将学习如何打印空心直角三角形星号图案。该图案是通过使用多个for循环和print语句形成的。第一行金字塔将打印一颗星,最后一行将打印n颗星。其他行将在行的开头和结尾处打印正好两颗星,这两颗星之间将有一些空格。
以下是相同的演示 -
输入
假设我们的输入是 -
Enter the size : 8
输出
期望的输出将是 -
The hollow pyramid triangle : * * * * * * * * * * * ********
算法
Step 1 - START Step 2 - Declare four integer values namely i, j, k and my_input. Step 3 - Read the required values from the user/ define the values Step 4 - We iterate through two nested 'for' loops to get space between the characters. Step 5 - After iterating through the innermost loop, we iterate through another 'for' loop. This will help print the required character. Step 6 - Now, print a newline to get the specific number of characters in the subsequent lines. Step 7 - Display the result Step 8 - Stop
示例1
这里,输入是根据提示由用户输入的。您可以在我们的代码练习工具
中实时尝试此示例。
import java.util.Scanner;
public class Hollowtangle{
public static void main(String[] args){
int my_input, k, i, j;
System.out.println("Required packages have been imported");
Scanner my_scanner = new Scanner(System.in);
System.out.println("A reader object has been defined ");
System.out.print("Enter the size : ");
my_input = my_scanner.nextInt();
for( i=1;i<=my_input;i++){
if(i==1 || i==my_input)
for( j=1;j<=i;j++){
System.out.print("*");
} else {
for( j=1;j<=i;j++){
if(j==1 || j==i)
System.out.print("*");
else
System.out.print(" ");
}
}
System.out.println();
}
}
}输出
Required packages have been imported A reader object has been defined Enter the size : 8 ** * * * * * * * * * * ********
示例2
这里,整数已预先定义,其值在控制台中被访问和显示。
public class Hollowtangle{
public static void main(String[] args){
int my_input, i, j;
my_input = 8;
System.out.println("The size is defined as " +my_input);
for( i=1;i<=my_input;i++){
if(i==1 || i==my_input)
for( j=1;j<=i;j++){
System.out.print("*");
} else {
for( j=1;j<=i;j++){
if(j==1 || j==i)
System.out.print("*");
else
System.out.print(" ");
}
}
System.out.println();
}
}
}输出
The size is defined as 8 * ** * * * * * * * * * * ********
广告
数据结构
网络
关系数据库管理系统 (RDBMS)
操作系统
Java
iOS
HTML
CSS
Android
Python
C语言编程
C++
C#
MongoDB
MySQL
Javascript
PHP