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Recursive Program on Reverse Letters/String

Reverse string in Java programming or printing a string backward using recursion is just a short program, which prompt the user to enter a string and the program output the last character up to the first character of the entered word. Originally, I used array on this but learned that it was not a wise decision so, I used the java predefined function charAt() instead. You can use charAt() if you want to extract a single character of the string. if you did not encounter charAt() yet, see the code below on how it works. Using charAt() is such a useful way to have a reverse string in java.

Java Source code: Reverse String in Java Programming

//Java source code on how to print a string backward using recursion
//java class
public class StringBackward
{
public static void reverseString(String word, int size)
{
if(size==0)
{
return;
}
else
{
System.out.print(word.charAt(size-1));
reverseString(word, size-1);
}
}
}
//main class
import java.util.Scanner;
public class Main {
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
String word;
System.out.print(“Enter a word: “);
word = input.next();
StringBackward access = new StringBackward();
System.out.print(“The reverse word is: “);
access.reverseString(word, word.length());
System.out.println();
}
}

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Below is the sample output of the program.

Sample Output:

Enter a word: hubpages

The reverse word is: segapbuh

Sample Output 2:

Enter a word: hubbers

The reverse word is: srebbuh

This is just how the program works, you can also make this program as a reference for a palindrome test using boolean. If the program is palindrome or the reverse word is the same as the original word return true and if not return false.

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