Question

Write a program that accepts a String value from the user and displays the reverse of that value. For additional challenge, determine if the String and its reverse are equal and display a message explaining the result.

Answer 1

import java.util.Scanner;

//ReverseString.java
class ReverseString{

  public static String reverse(String str){
    if(str.length() == 0){
      return "";
    }
    else{
      return str.charAt(str.length()-1)+reverse(str.substring(0,str.length()-1));
    }
  }
  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    System.out.printf("Enter string: ");
    String str = scanner.nextLine();
    String reversedString = reverse(str);
    System.out.println("Reversed: "+reversedString);
    if(str.equals(reversedString)){
      System.out.println("String and its reverse are equal");
    }
    else{
      System.out.println("String and its reverse are NOT equal");
    }
  }
}