CareerCup

Also you can use asm and stack:

push a
push b

pop a
pop b

1) Use pointers
2) a = a + b, b = a - b, a = a - b

import java.io.*;
class swap{
public static void main(String args[]) throws IOException{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
System.out.print("Enter 1st no: ");
int x=Integer.parseInt(br.readLine());
System.out.print("Enter 2nd no: ");
int y=Integer.parseInt(br.readLine());
System.out.println("\nNumbers Before Swapping:");
System.out.println("x = "+x);
System.out.println("y = "+y);
//Swapping Method 2
x = x^y;
y = x^y;
x = x^y;
System.out.println("\nNumbers After Swapping:");
System.out.println("x = "+x);
System.out.println("y = "+y);
}
}

u can use xor as well

a^=b^=a^=b;

A) a=a^b
b=a^b
a=a^b
B) a=a-b
b=a+b
a=b-a

b = (a+b)-(a=b);

howz this ?