Reverse a string in Java

Question

I have \"Hello World\" kept in a String variable named hi.

I need to print it, but reversed.

How can I do this? I understand there

Answer 1

Just For Fun..:)

Algorithm (str,len):
  char reversedStr[] =new reversedStr[len]
  Traverse i from 0 to len/2 and then
    reversedStr[i]=str[len-1-i]  
    reversedStr[len-1=i]=str[i]
  return reversedStr;

Time Complexity:O(n) Space Complexity :O(n)

 public class Reverse {
    static char reversedStr[];    
    public static void main(String[] args) {
        System.out.println(reversestr("jatin"));
    }        
    private static String reversestr(String str) {
        int strlen = str.length();
        reversedStr = new char[strlen];
        
        for (int i = 0; i <= strlen / 2; i++) {
            reversedStr[i] = str.charAt(strlen - 1 - i);
            reversedStr[strlen - 1 - i] = str.charAt(i);

        }
        return new String(reversedStr);
    }

}