Java 程式以列印半菱形星形圖案


在本文中,我們將瞭解如何列印半菱形星形圖案。該圖案透過使用多個 for 迴圈和 print 語句來形成。

以下是相同示例的演示 −

輸入

假設我們的輸入是 −

Enter the number of rows : 8

輸出

所需輸出為 −

The half diamond pattern :
*
**
***
****
*****
******
*******
********
*******
******
*****
****
***
**
*

演算法

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

在這裡,輸入是由使用者根據提示輸入的。您可以在我們的 編碼基礎工具 run button 中即時嘗試此示例。

import java.util.Scanner;
public class HalfDiamond{
   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.print("The half diamond pattern : ");
      for (i = 0; i < my_input; i++){
         for (j = 0; j < i + 1; j++)
            System.out.print("*");
         System.out.print("\n");
      }
      for (i = 1; i < my_input; i++){
         for (j = i; j < my_input; j++)
            System.out.print("*");
         System.out.print("\n");
      }
   }
}

輸出

Required packages have been imported
A reader object has been defined
Enter the number of rows : 8
The half diamond pattern :
*
**
***
****
*****
******
*******
********
*******
******
*****
****
***
**
*

示例 2

在這裡,整數已預先定義,並且其值在控制檯上被訪問和顯示。

public class HalfDiamond{
   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.print("The half diamond pattern : ");
      for (i = 0; i < my_input; i++){
         for (j = 0; j < i + 1; j++)
            System.out.print("*");
         System.out.print("\n");
      }
      for (i = 1; i < my_input; i++){
         for (j = i; j < my_input; j++)
            System.out.print("*");
         System.out.print("\n");
      }
   }
}

輸出

The number of rows is defined as 8
The half diamond pattern : *
**
***
****
*****
******
*******
********
*******
******
*****
****
***
**
*

更新時間:2022-2-28

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