Can anyone suggest other things also

Question

Swap String without using third variable
https://code.sololearn.com/cTWjQWnaIRUK/?ref=app

Answer 1

I couldn't think of a simpler way to do it than you have.

I base 64-encoded the 2 strings and used a : to separate the encodings. : is not possible in a base 64 encoding so it is a safe delimiter.

import java.util.*;

public class Program
{
public static void main(String[] args) {

String a="hello";

String b="world";

a=Base64.getEncoder().encodeToString(a.getBytes()) + ":" + Base64.getEncoder().encodeToString(b.getBytes());
b = new String(Base64.getDecoder().decode(a.substring(0, a.indexOf(":"))));
a = new String(Base64.getDecoder().decode(a.substring(a.indexOf(":") + 1)));
System.out.println(a);
System.out.println(b);
}
}