XOR Swap

int x = 42;
int y = 24;

System.out.println("x: " + x + "\ny: " + y);

x = x ^ y;
y = x ^ y;
x = x ^ y;

System.out.println("x: " + x + "\ny: " + y);

//

int x = 42;
int y = 24;

System.out.println("x: " + x + "\ny: " + y);

x = x + y;
y = x - y;
x = x - y;

System.out.println("x: " + x + "\ny: " + y);