How To Reverse Array In Javascript With Code Examples

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How To Reverse Array In Javascript With Code Examples

This article will present you, by way of a sequence of examples, find out how to repair the How To Reverse Array In Javascript drawback that happens in code.

var arr = [34, 234, 567, 4];
print(arr);
var new_arr = arr.reverse();
print(new_arr);

The following piece of code gives a concise abstract of the various strategies that can be utilized to unravel the How To Reverse Array In Javascript drawback.

let array1 = ["yes", "no", "maybe", "always", "sometimes", "never", "if"];
let array2 = [5,8,2,9,5,6,3,1];

perform reverseArray(arr) {
  var newArray = [];
  for (var i = arr.size - 1; i >= 0; i--) {
    newArray.push(arr[i]);
  }
  return newArray;
}

reverseArray(array1); // ["if", "never", "sometimes", "always", "maybe", "no", "yes"]
reverseArray(array2); // [1, 3, 6, 5, 9, 2, 8, 5]
let arr = [1,2,3]
let newArr = arr.slice().reverse(); //returns a reversed array with out modifying the unique
console.log(arr, newArr) //[1,2,3] [3,2,1]
numArr.reverse();
strArr.reverse();

console.log(numArr);
console.log(strArr);
// reversing an array in javascript is kinda laborious. you may't index -1.
// however i can present how you are able to do it in 4 traces.

var myArray = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];

for (var i = myArray.size - 1; i > 0; i -= 1) {
	myArray.shift();
	myArray.push(i);
}

console.log(myArray); // output: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
var myArray = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];

for (var i = 0; i < myArray.size; i++) {
  [myArray[i], myArray[myArray.length-1]] = [myArray[myArray.length-1], myArray[i]]
}

console.log(myArray); // output: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1]

We discovered find out how to clear up the How To Reverse Array In Javascript by a spread of various circumstances.

How do you reverse an array in JS?

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

How do you reverse a component in an array?

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

How do you reverse an array array?

Solution Steps

  • Place the 2 pointers (let begin and finish ) initially and finish of the array.
  • Swap arr[start] and arr[end]
  • Increment begin and decrement finish with 1.
  • If begin reached to the worth size/2 or begin ≥ finish , then terminate in any other case repeat from step 2.

How do you reverse a perform in JavaScript?

Using Built-in Methods to Reverse the String – break up(), reverse() and be part of() The easiest approach to reverse a string in JavaScript is to separate a string into an array, reverse() it and be part of() it again right into a string. With ES6, this may be shortened and simplified all the way down to: let string = “!28-Dec-2021

How do I reverse an array in ES6?

ES6 – Array Method reverse() reverse() technique reverses the component of an array. The first array component turns into the final and the final turns into the primary.

How do you reverse an array in a for loop?

Logic to print array in reverse order

  • Input measurement and components in array from person. Store it in some variable say measurement and arr .
  • Run a loop from measurement – 1 to 0 in decremented type. The loop construction ought to seem like for(i=size-1; i>=0; i–) .
  • Inside loop print present array component i.e. arr[i] .

How do you reverse an array with out utilizing one other array?

Steps to reverse an array with out utilizing one other array in C: Set i=0 to level to the primary component and j=length-1 to level to the final component of the array. Run whereas loop with the situation i<j . Inside loop swap ith and jth component within the array. Increment i and decrement j .

How do you reverse an array in TypeScript?

reverse() is an inbuilt TypeScript perform which is used to reverses the component of an array. Syntax: array. reverse();03-Mar-2021

How do you reverse an inventory in Java?

reverse() technique is a java. util. Collections class technique. It reverses the order of components in an inventory handed as an argument.12-Sept-2022

Does reverse return a brand new array JavaScript?

The JavaScript array reverse() technique modifications the sequence of components of the given array and returns the reverse sequence. In different phrases, the arrays final component turns into first and the primary component turns into the final.

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