Java Program to Swap Two Numbers

Java Program to Swap Two Numbers (Using Temporary Variable)

import java.io.*;
import java.util.*;

class swap
{
	public static void main(String args[])
	{
		Scanner s = new Scanner(System.in);
		System.out.print("Enter two numbers : ");
		int m = s.nextInt();
		int n = s.nextInt();
		int temp;
		System.out.println("BEFORE SWAP");
		System.out.println("m = " + m + " n = " + n);
		temp = n;
		n = m;
		m = temp;
		System.out.println("AFTER SWAP");
		System.out.println("m = " + m + " n = " + n);
	}
}

Java Program to Swap Two Numbers (Without using Temporary Variable)

import java.io.*;
import java.util.*;

class swap
{
	public static void main(String args[])
	{
		Scanner s = new Scanner(System.in);
		System.out.print("Enter two numbers : ");
		int m = s.nextInt();
		int n = s.nextInt();
		int temp;
		System.out.println("BEFORE SWAP");
		System.out.println("m = " + m + " n = " + n);
		m = m + n;
		n = m - n;
		m = m - n;
		System.out.println("AFTER SWAP");
		System.out.println("m = " + m + " n = " + n);
	}
}