Question

Swap the values of two variables without using third variable in java

Answer 1

// Bitwise XOR based method
x = x ^ x; // x becomes 0
x = x ^ x; // x remains 0
x = x ^ x; // x remains 0

// Arithmetic based method
x = x + x; // x becomes 2x
x = x – x; // x becomes 0
x = x – x; // x remains 0

Let us see the following program.

#include <stdio.h>

void swap(int *xp, int *yp)

{

    *xp = *xp ^ *yp;

    *yp = *xp ^ *yp;

    *xp = *xp ^ *yp;

}

 

int main()

{

  int x = 10;

  swap(&x, &x);

  printf("After swap(&x, &x): x = %d", x);

  return 0;

}


output
After swap(&x, &x): x = 0

Answer 2

hope it helps you!!

please mark me as the brainliest ^_^

import java.util.*;

class third_variable

{

public static void main(String args[])

{

Scanner sc=new Scanner(System.in);

int a,b;

System.out.println("enter any two numbers");

a=sc.nextInt();

b=sc.nextInt();

System.out.println("values before swapping are"+a+"and"+b);

a=a+b;

b=a-b;

a=a-b;

System.out.println("values before swapping are"+a+"and"+b);

}

}