Answer 1

happy to help! :)

Answer 2

Por si ha alguien Le Interesa De como Lo Hice Fue asi : xd

import java.util.Scanner;

public class Program
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String text = scanner.nextLine();
char[] arr = text.toCharArray();

//tu código va aquí
String a = String.valueOf(arr);
StringBuilder str = new StringBuilder(a);
a = str.reverse().toString();
System.out.print(a);

}
}

Answer 3

import java.util.*;

public class Program
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String text = scanner.nextLine();

char[] arr = text.toCharArray();

// your spelling is wrong of "length"
int j=arr.length-1;

// i-- should be i++ since we need to traverse the chars of the string
// also i=0 should start with zero because we need to traverse from left to right
for (int i=j; i>=0; i--){

System.out.print(arr[i]);

}

}
}