How To Find Reverse Of A Number In Javascript With Code Examples

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How To Find Reverse Of A Number In Javascript With Code Examples

Hello everybody, on this publish we are going to look at methods to resolve the How To Find Reverse Of A Number In Javascript programming puzzle.

// Function to reverse Number
operate reverseNum(n) {
  let r = n.toString().cut up('').reverse().be part of('');
  return Math.signal(n) * parseInt(r);

// Call

// Outputs

How To Find Reverse Of A Number In Javascript. There isn’t only one technique to resolve an issue; relatively, there are a selection of distinct methods that may be utilised. In the next examples, we are going to talk about quite a lot of completely different approaches that may very well be taken.

// methods to reverse quantity in javascript
let quantity = 12345;
let reverse = parseInt(quantity.toString().cut up('').reverse().be part of(''));
// Output:
// 54321
let rev = 0;
let num = 123456;
let lastDigit;

whereas(num != 0){
	lastDigit = num % 10;
  rev = rev * 10 + lastDigit;
  num = Math.flooring(num/10);

console.log("Reverse quantity : "+rev);
operate reverseInt(n) {
  let reversed = n.toString().cut up("").reverse().be part of("");
  //from string to integer
  reversed = parseInt(reversed);

  if (n < 0) {
    return reversed * -1;

  return reversed;
operate reverseInt(n) {
  const reversed = n.toString().cut up("").reverse().be part of(""); 

  return parseInt(reversed) * Math.signal(n);
// methods to discover reverse of a quantity in javascript
const reverseNumber = n => 
  parseFloat(n.toString().cut up('').reverse().be part of('')) * Math.signal(n);
console.log(reverseNumber(815)); //518
console.log(reverseNumber(-200)); // -2
console.log(reverseNumber(43.5)); // 5.34
console.log(reverseNumber(-3.62)); // -26.3

Using many examples, we’ve realized methods to deal with the How To Find Reverse Of A Number In Javascript drawback.

How do I reverse a quantity in JavaScript?

JavaScript program to reverse a quantity: let rev = 0; let num = 123456; let lastDigit; whereas(num != 0){ lastDigit = num % 10; rev = rev * 10 + lastDigit; num = Math. flooring(num/10); } console.

How do you discover the reverse of a quantity?

Reverse an Integer In every iteration of the loop, the rest when n is split by 10 is calculated and the worth of n is lowered by 10 instances. Inside the loop, the reversed quantity is computed utilizing: reverse = reverse * 10 + the rest; Let us see how the whereas loop works when n = 2345 .

Is there any reverse operate in JavaScript?

JavaScript Array reverse() The reverse() methodology reverses the order of the weather in an array. The reverse() methodology overwrites the unique array.

How do you reverse a quantity in HTML?

JavaScript: Reverse a quantity

  • Pictorial Presentation:
  • Sample Solution:
  • HTML Code: <!
  • JavaScript Code: operate reverse_a_number(n) { n = n + “”; return n.cut up(“”).reverse().be part of(“”); } console.log(Number(reverse_a_number(32243)));
  • Explanation:
  • Flowchart:
  • Live Demo:

How do you reverse an object in JavaScript?

To loop by an object in reverse order:

  • Use the Object. keys() methodology to get an array of the thing’s keys.
  • Call the reverse() methodology to reverse the array.
  • Use the forEach() methodology to iterate over the array and entry the thing’s keys and values in reverse order.

How do you reverse a component in an array?

Using Temp array Take enter the dimensions of the array and the weather of the array. Consider a operate reverse which takes the parameters-the array(say arr) and the dimensions of the array(say n). Inside the operate, a brand new array (with the array dimension of the primary array, arr) is initialized.08-Apr-2022

How do you reverse a 5 digit quantity?

h> int primary() { int num; lengthy int a,reversenum=0; printf(“Enter the 5 digit quantity(Not Greater Than 32767):n”); scanf(“%d”,&num); a=numpercent10; num= num/10; reversenum=reversenum+a*10000; a=numpercent10; num=num/10; reversenum=reversenum+a*1000; a=numpercent10; num=num/10; reversenum=reversenum+a*100; a=numpercent10; num=num/10; reversenum 26-Oct-2020

How do you reverse a quantity with no loop?

We will use two variable for reverse the numbers. Just easy mathematic operation we are going to carry out to reverse the quantity.How program will work?

  • First initialize two integer variable like (num, temp).
  • Now carry out reverse operation with each variable.
  • Finally present the outcome on output display screen after reverse.

How do you reverse two numbers in Java?

In this program, whereas loop is used to reverse a quantity as given within the following steps: First, the rest of the num divided by 10 is saved within the variable digit . Now, the digit accommodates the final digit of num , i.e. 4. digit is then added to the variable reversed after multiplying it by 10.

What does .cut up do in JavaScript?

The cut up() methodology splits a string into an array of substrings. The cut up() methodology returns the brand new array. The cut up() methodology doesn’t change the unique string. If (” “) is used as separator, the string is cut up between phrases.

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