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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import java.util.Scanner;

public class LabProgram {
    // Recursive method to reverse a string
    public static String reverseString(String str) {
        // Base case: if the string is empty or has only one character, return the string as is
        if (str.isEmpty() || str.length() == 1) {
            return str;
        } else {
            // Recursive step: move the first character to the end and reverse the remaining substring
            return reverseString(str.substring(1)) + str.charAt(0);
        }
    }

    public static void main(String[] args) {
        Scanner scnr = new Scanner(System.in);
        String input, result;

        input = scnr.nextLine();

        // Call the reverseString() method
        result = reverseString(input);

        // Output the result
        System.out.printf("Reverse of \"%s\" is \"%s\".%n", input, result);
    }
}

**Reversing a String Example**

1. **Input:**
   - The original string is: `Hello`

2. **Your Output:**
   - The reversed version of "Hello" is presented as: `olleH`

3. **Expected Output:**
   - The correct reversed version of "Hello" should be: `olleH`

**Explanation:**
The goal of this example is to demonstrate the process of reversing a string. In this case, both the output generated and the expected output are identical and correctly showcase the reversal as `olleH`. The diagram includes text boxes containing the input, the generated output, and the expected correct output to make it clear how the string transformation should occur.
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Transcribed Image Text:**Reversing a String Example** 1. **Input:** - The original string is: `Hello` 2. **Your Output:** - The reversed version of "Hello" is presented as: `olleH` 3. **Expected Output:** - The correct reversed version of "Hello" should be: `olleH` **Explanation:** The goal of this example is to demonstrate the process of reversing a string. In this case, both the output generated and the expected output are identical and correctly showcase the reversal as `olleH`. The diagram includes text boxes containing the input, the generated output, and the expected correct output to make it clear how the string transformation should occur.
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