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法律研究Java 程序以打印金字塔星号图案
在本文中，我们将了解如何打印金字塔星号图案。该图案通过使用多个 for-loops 和 print 语句形成的。
以下是它的演示−
输入
假设我们的输入为 −
Enter the number of rows : 8
输出
所需输出为 −
The pyramid 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 inside a ‘for’ loop 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，输入是用户根据提示输入的。你可以尝试在我们 编码实践工具 
中实时运行此示例。
import java.util.Scanner;
public class Pyramid{
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 pyramid star pattern : ");
for (i=0; i<my_input; i++){
for (j=my_input-i; j>1; 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 pyramid star pattern : * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
示例 2
此处，整数已预先定义，其值会在控制台上被访问和显示。
public class Pyramid{
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 pyramid star pattern : ");
for (i=0; i<my_input; i++){
for (j=my_input-i; j>1; 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 pyramid star pattern :
*
* *
* * *
* * * *
* * * * *
* * * * * *
* * * * * * *
* * * * * * * *
更新于: 22-2-2022
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