Question

Write a program to accept two integer numbers ( in two variables x and y
respectively ) and swap their values
i. Using a third variable.
ii. Without using a third variable.
Display the values of the variables before and after change.

Answer 1

Answer:

Hey this is the program for your question using third variable..

import java.util.Scanner;

public class main{

public static void main(String args[])

{

Scanner in = new Scanner(System.in);

int a, b,c;

a=in.nextInt();

b=in.nextInt();

c=a;

a=b;

b=c;

System.out.println(a);

System.out.println(b);

}

}

This is the answer without using third variable..

import java.util.*;

class Swap

{

public static void main(String a[])

{

System.out.println("Enter the value of x and y");

Scanner sc = new Scanner(System.in);

/*Define variables*/

int x = sc.nextInt();

int y = sc.nextInt();

System.out.println("before swapping numbers: "+x +" "+ y);

/*Swapping*/

x = x + y;

y = x - y;

x = x - y;

System.out.println("After swapping: "+x +" " + y);

}

}

Explanation:

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