package Question19_1;
public class Question {
public static void swap(int a, int b) {
a = b - a; // 9 - 5 = 4
b = b - a; // 9 - 4 = 5
a = a + b; // 4 + 5 = 9
System.out.println("a: " + a);
System.out.println("b: " + b);
}
public static void swap_opt(int a, int b) {
a = a^b;
b = a^b;
a = a^b;
System.out.println("a: " + a);
System.out.println("b: " + b);
}
public static void main(String[] args) {
int a = 1672;
int b = 9332;
System.out.println("a: " + a);
System.out.println("b: " + b);
swap(a, b);
swap_opt(a, b);
}
}