# Your question: How can I swap two numbers without using third variable in JavaScript?

Contents

## Can we swap 2 variables without a third one?

Using arithmetic operators

Swapping two variables without using a third variable. The arithmetic operators for addition and subtraction can be used to perform the swap without using a third variable. Similarly, multiplication and division can be used to perform the swap without using the third variable.

## How do you swap two variables in JavaScript?

4 Ways to Swap Variables in JavaScript

1. Destructuring assignment. Destructuring assignment (a feature of ES2015) lets you extract items of an array into variables. …
2. Temporary variable. Swapping variables using a temporary variable is classic. …
4. Bitwise XOR operator. …
5. Conclusion.

## How can we swap the value of two strings without using third variable?

How do you swap two string variables without using third or temp variable in java?

1. public class SwapWithoutTemp {
2. public static void main(String args[]) {
3. String a = “Love”;
4. String b = “You”;
5. System.out.println(“Before swap: ” + a + ” ” + b);
6. a = a + b;
7. b = a.substring(0, a.length() – b.length());

## How do you swap elements in JavaScript?

For variable number of elements

You can swap any number of objects or literals, even of different types, using a simple identity function like this: var swap = function (x){return x}; b = swap(a, a=b); c = swap(a, a=b, b=c); For your problem: var swap = function (x){return x}; list[y] = swap(list[x], list[x]=list[y]);

## How can you swap two numbers without using a third variable using XOR?

Method 1: Using Arithmetic operators + and –

1. #include<stdio.h>
2. int main()
3. {
4. int a, b;
5. printf(“Enter two numbers: “);
6. scanf(“%d %d”, &a, &b); //consider two numbers as 4 and 5.
7. a = a + b; //a = 4 + 5 = 9.
8. b = a – b; //b = 9 – 5 = 4.

## How do you change values in two variables?

If the two variables are numbers, their values can be swapped using arithmetic operators such as addition and subtraction ( + , – ) or multiplication and division ( * , / ). This swapping method is based on calculating the sum of the two numbers and then swapping them using the sum and the difference from the sum.

## What is Destructuring in JavaScript?

Destructuring is a JavaScript expression that allows us to extract data from arrays, objects, and maps and set them into new, distinct variables. Destructuring allows us to extract multiple properties, or items, from an array​ at a time.

## How can I swap two strings without using third variable in C++?

Algorithm

1. Define two strings that need to be swapped.
2. Concatenate both the strings and store it in first string.
3. Extract the string from indexes 0 to length (string1) – (string2) using substring function and store it in string 2.

## How do you swap two numbers?

Let’s see another example to swap two numbers using * and /.

1. #include<stdio.h>
2. #include<stdlib.h>
3. int main()
4. {
5. int a=10, b=20;
6. printf(“Before swap a=%d b=%d”,a,b);
7. a=a*b;//a=200 (10*20)
8. b=a/b;//b=10 (200/20)
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## Why are strings immutable in Java?

String is Immutable in Java because String objects are cached in String pool. Since cached String literals are shared between multiple clients there is always a risk, where one client’s action would affect all another client. You are right. String in java uses concept of String Pool literal.

## How do you swap arrays?

A simple solution is to iterate over elements of both arrays and swap them one by one. A quick solution is to use std::swap(). It can directly swap arrays if they are of same size.

## How do you swap two numbers in an array?

Write a c program for swapping of two arrays

1. #include<stdio.h>
2. int main() {
3. int a,b,c,i;
4. printf(“Enter First array->”);
5. for (i=0;i<10;i++)
6. scanf(“%d”,&a[i]);
7. printf(“nEnter Second array->”);
8. for (i=0;i<10;i++)