Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Question

I need help with a Java question so that it can output them described in the image below:

import java.util.Scanner;

public class LabProgram {
    public static void main(String[] args) {
        Scanner scnr = new Scanner(System.in);
        int[] userList = new int[20]; 
        int numElements; 

        numElements = scnr.nextInt(); 


        for (int i = 0; i < numElements; i++) {
            userList[i] = scnr.nextInt();
        }


        for (int i = numElements - 1; i >= 0; i--) {
            System.out.print(userList[i]);


            if (i > 0) {
                System.out.print(",");
            }
        }
    }
}

## Comparison of Outputs

### Test Case 1:

- **Input:**  
  `5 2 4 6 8 10`

- **Your Output:**  
  `10, 8, 6, 4, 2`

- **Expected Output:**  
  `10, 8, 6, 4, 2,↵`

**Analysis:**  
The expected output contains an additional newline character (`↵`) at the end.

---

### Test Case 2:

- **Input:**  
  `6 42 53 19 18 100 12`

- **Your Output:**  
  `12, 100, 18, 19, 53, 42`

- **Expected Output:**  
  `12, 100, 18, 19, 53, 42,↵`

**Analysis:**  
The expected output ends with an additional newline character (`↵`).

---

### Test Case 3:

- **Input:**  
  `1 9`

- **Your Output:**  
  `9`

- **Expected Output:**  
  `9,↵`

**Analysis:**  
The expected output includes a comma and a newline character (`↵`) after the number `9`.
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Transcribed Image Text:## Comparison of Outputs ### Test Case 1: - **Input:** `5 2 4 6 8 10` - **Your Output:** `10, 8, 6, 4, 2` - **Expected Output:** `10, 8, 6, 4, 2,↵` **Analysis:** The expected output contains an additional newline character (`↵`) at the end. --- ### Test Case 2: - **Input:** `6 42 53 19 18 100 12` - **Your Output:** `12, 100, 18, 19, 53, 42` - **Expected Output:** `12, 100, 18, 19, 53, 42,↵` **Analysis:** The expected output ends with an additional newline character (`↵`). --- ### Test Case 3: - **Input:** `1 9` - **Your Output:** `9` - **Expected Output:** `9,↵` **Analysis:** The expected output includes a comma and a newline character (`↵`) after the number `9`.
Expert Solution
Check Mark
Step 1: Introduction

Hеrе is an algorithm for thе Java codе you providеd:

Crеatе an array to storе thе еlеmеnts еntеrеd by thе usеr.


Rеad thе numbеr of еlеmеnts from thе usеr.


Rеad thе еlеmеnts from thе usеr and storе thеm in thе array.


Itеratе ovеr thе array in rеvеrsе ordеr, printing еach еlеmеnt to thе consolе.


If thе currеnt еlеmеnt is not thе first еlеmеnt, print a comma and a spacе charactеr bеforе it.


Add a spacе charactеr at thе еnd of thе output. 

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