Output a half pyramid of stars with a height determined by the user. If the user enters a number less than one, exit. Write in java that will results like test case examples
Output a half pyramid of stars with a height determined by the user. If the user enters a number less than one, exit. Write in java that will results like test case examples
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
Related questions
Question
Output a half pyramid of stars with a height determined by the user. If the user enters a number less than one, exit.
Write in java that will results like test case examples
![**Test Case 7**
```
Enter a height:
30 [ENTER]
```
The program then displays a right-aligned triangle composed of asterisks (`*`). The height of the triangle, as specified by the user, is 30 rows. Each subsequent row increases by one asterisk, starting from one asterisk at the top.
```
+
*\n
**
***\n
****
*****\n
******
*******\n
********
*********\n
**********
***********\n
************
*************\n
**************
***************\n
****************
*****************\n
******************
*******************\n
********************
*********************\n
**********************
***********************\n
************************
*************************\n
**************************
***************************\n
****************************
*****************************
```
**Test Case 8**
```
Enter a height:
-32432 [ENTER]
```
The program outputs the message:
```
Height must be at least one.\n
```
This indicates that the input height was invalid since it was a negative number. The program enforces that the minimum acceptable height is 1.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8c7c446f-cbb9-4516-a4dd-69b90c0496a4%2Fda5d2f12-7e85-4b2f-ad57-4d2303bcf458%2F67uvl9_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Test Case 7**
```
Enter a height:
30 [ENTER]
```
The program then displays a right-aligned triangle composed of asterisks (`*`). The height of the triangle, as specified by the user, is 30 rows. Each subsequent row increases by one asterisk, starting from one asterisk at the top.
```
+
*\n
**
***\n
****
*****\n
******
*******\n
********
*********\n
**********
***********\n
************
*************\n
**************
***************\n
****************
*****************\n
******************
*******************\n
********************
*********************\n
**********************
***********************\n
************************
*************************\n
**************************
***************************\n
****************************
*****************************
```
**Test Case 8**
```
Enter a height:
-32432 [ENTER]
```
The program outputs the message:
```
Height must be at least one.\n
```
This indicates that the input height was invalid since it was a negative number. The program enforces that the minimum acceptable height is 1.

Transcribed Image Text:**Test Case 1**
- Prompt: "Enter a height \n"
- Input: `5`
- Output:
```
*
**
***
****
*****
```
**Test Case 2**
- Prompt: "Enter a height \n"
- Input: `1`
- Output:
```
*
```
**Test Case 3**
- Prompt: "Enter a height \n"
- Input: `10`
- Output:
```
*
**
***
****
*****
******
*******
********
*********
**********
```
### Explanation
The program prompts the user to enter a height, which is a numerical value. This value determines the number of lines in a right-aligned pyramid of asterisks. Each line \( n \) contains \( n \) asterisks. The pattern continues until the specified height is reached.
- In **Test Case 1**, a height of 5 results in a pyramid with 5 lines.
- In **Test Case 2**, a height of 1 results in a single line.
- In **Test Case 3**, a height of 10 results in a pyramid with 10 lines.
This pattern is useful for learning loops and basic output formatting in programming.
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