Reverse a string in Java, in O(1)?

Question

Is there any facility in the standard Java libraries that, given a CharSequence, produces the reverse in O(1) time?

I guess this is \"easy\" to implement, just wond

Answer 1

// worked hard to figure this out

public static String ReverseString(String s){
    if (s.length()>0){
        s=s.charAt(s.length()-1)+printString(s.substring(0,s.length()-1));
    }
    return s;
}