How can I get a char array in reverse order?

Question

my assignment question is like that

Write a program which prints the letters in a char array in reverse order using

void printReverse(char         


        

Answer 1

This is a class which reveres the character array using recursion.

public class ReverseString {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        String str = new String("Hello");
        char[] strcharArray = str.toCharArray();
        printReverse(strcharArray);

    }

    private static void printReverse(char [] str) {
          helper(0, str);
        }
        private static void helper(int index, char [] str) {
          if (str == null || index >= str.length) {
            return;
          }
          helper(index + 1, str);
          System.out.println(str[index]);
        }
}