Swap without using a temp var

Question

can u help me..there is a way to swap two munbers without using anothere thirs variable..i donno
the way ou..pls help ... the numbers r given in the program itself???? thanx

Answer 1

Okay already. I've just tested out apppu's logic and it works fine.
A sample code and output is included below.
public class TestNum {
    public static void main(String[] args) {
        int a = 10;
        int b = 25;
        System.out.println("a="+a+" b="+b);
        System.out.println("a=a+b;b=a-b;a=a-b");
        System.out.println("=================");
        a = a+b;
        System.out.println("a="+a+" b="+b);
        b = a-b;
        System.out.println("a="+a+" b="+b);
        a = a-b;
        System.out.println("a="+a+" b="+b);
The Output:
a=10 b=25
a=a+b;b=a-b;a=a-b
=================
a=35 b=25
a=35 b=10
a=25 b=10
unformatted
public class TestNum {
public static void main(String[] args) {
int a = 10;
int b = 25;
System.out.println("a="+a+" b="+b);
System.out.println("a=a+b;b=a-b;a=a-b");
System.out.println("=================");
a = a+b;
System.out.println("a="+a+" b="+b);
b = a-b;
System.out.println("a="+a+" b="+b);
a = a-b;
System.out.println("a="+a+" b="+b);