java programming

Swapping numbers without using a third variable is a three-step process that’s better visualized in code: b = b + a; // now b is sum of both the numbers a = b - a; // b - a = (b + a) - a = b (a is swapped) b = b - a; // (b + a) - b = a (b is swapped) The following example code shows one way to implement the number swap method: public class SwapNumbers { public static void main(String[] args) { int a = 10; int b = 20; System.out.println("a is " + a + " and b is " + b); a = a + b; b = a - b; a = a - b; System.out.println("After swapping, a is " + a + " and b is " + b); } } The output shows that the integer values are swapped: Output a is 10 and b is 20 After swapping, a is 20 and b is 10