In this article we will discuss about swap variable without using third variable:

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public class Swap

{

int x = 10;

int y = 15;

public static void main(String args[])

{

Swap object = new Swap();

object.g();

}

public void g()

{

x = x+y;

y = x-y;

x = x-y;

System.out.println("After Swap Value of y : " + y);

System.out.println("After Swap Value of x : " + x);

}

}

**output :**

After Swap Value of y : 10

After Swap Value of x : 15

**Code Explanation :** Suppose we have two variable x, y and they have value 10, 15 respectively and we want to swap these two variables value.

HOW IT WOULD BE DONE ?

1). First , i will join these two variables value & store it in variable x.

Now the value of x is 25.

2). Now, we will minus the value of y(15) from this x(25).

we will get 10 & will store in variable y

3). Now the value on y is 10 & value of x is 25.

again we will minus this y value from & store it in variable x so value of variable of x will become 15.

Congratulation You have swapped the value of two variable without using third variable. :)

**Tags :**

## Swap two variable without using third variable in Java |

## how two swap two variable in java without using third variable |

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