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法律研究Java 程序打印上三角星形图案
在本文中，我们将了解如何打印上三角星形图案。该图案是使用多个 for 循环和 print 语句形成的。
以下是演示 −
输入
假设我们的输入是 −
Enter the number of rows : 8
输出
所需的输出为 −
The upper star triangle star pattern : * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
算法
Step 1 - START Step 2 - Declare three integer values namely i, j 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
此处，输入由用户根据提示输入。你可以在我们的 编码工具 
中实时尝试此示例。
import java.util.Scanner;
public class UpperStarTriangle{
public static void main(String args[]){
int i, j, my_input;
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 number of rows : ");
my_input = my_scanner.nextInt();
System.out.println("The upper star triangle star pattern: ");
for (i=0; i<my_input; i++){
for (j=2*(my_input-i); j>=0; j--){
System.out.print(" ");
}
for (j=0; j<=i; j++ ){
System.out.print("* ");
}
System.out.println();
}
}
}输出
Required packages have been imported
A reader object has been defined
Enter the number of rows : 8
The upper star triangle star pattern:
*
* *
* * *
* * * *
* * * * *
* * * * * *
* * * * * * *
* * * * * * * *示例 2
此处，该整数已预先定义，其值将被访问并显示在控制台上。
public class UpperStarTriangle{
public static void main(String args[]){
int i, j, my_input;
my_input = 8;
System.out.println("The number of rows is defined as " +my_input);
System.out.println("The upper star triangle star pattern: ");
for (i=0; i<my_input; i++){
for (j=2*(my_input-i); j>=0; j--){
System.out.print(" ");
}
for (j=0; j<=i; j++ ){
System.out.print("* ");
}
System.out.println();
}
}
}输出
The number of rows is defined as 8 The upper star triangle star pattern: * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
更新于: 2022-2-25
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