MDN Web Docs
developer.mozilla.org › en-US › docs › Web › JavaScript › Reference › Global_Objects › Array › reverse
Array.prototype.reverse() - JavaScript | MDN
The reverse() method of Array instances reverses an array in place and returns the reference to the same array, the first array element now becoming the last, and the last array element becoming the first. In other words, elements order in the array will be turned towards the direction opposite ...
GeeksforGeeks
geeksforgeeks.org › dsa › program-to-reverse-an-array
Array Reverse - GeeksforGeeks
Reverse an array arr[]. Reversing an array means rearranging the elements such that the first element becomes the last, the second element becomes second last and so on.
Published August 8, 2025
Videos
12:59
Data Structures And Algorithms - Reverse An Array - YouTube
05:42
How to reverse an array in modern JavaScript? - YouTube
How to Reverse an Array or String Algorithm | Computer Science
Array Reverse | How to reverse an array | Javascript | One Minute ...
03:16
JS Array Methods Explained #16 - REVERSE Method - YouTube
07:13
Reverse an array, in C - YouTube
W3Schools
w3schools.com › jsref › jsref_reverse.asp
W3Schools.com
The reverse() method reverses the order of the elements in an array.
Microsoft Learn
learn.microsoft.com › en-us › dotnet › api › system.array.reverse
Array.Reverse Method (System) | Microsoft Learn
The Reverse method can be used to reverse a jagged array. This method is an O(n) operation, where n is length. ... Reverses the sequence of the elements in the one-dimensional generic array.
PHP
php.net › manual › en › function.array-reverse.php
PHP: array_reverse - Manual
<?php $input = array("php", 4.0, array("green", "red")); $reversed = array_reverse($input); $preserved = array_reverse($input, true); print_r($input); print_r($reversed); print_r($preserved); ?>
W3Schools
w3schools.com › php › func_array_reverse.asp
PHP array_reverse() Function
<?php $a=array("a"=>"Volvo","b"=>"BMW","c"=>"Toyota"); print_r(array_reverse($a)); ?> Try it Yourself »
LeetCode
leetcode.com › problems › reverse-string
Reverse String - LeetCode
Can you solve this real interview question? Reverse String - Write a function that reverses a string. The input string is given as an array of characters s. You must do this by modifying the input array in-place [https://en.wikipedia.org/wiki/In-place_algorithm] with O(1) extra memory.
Lucee Documentation
docs.lucee.org › reference › functions › arrayreverse()
array.reverse() :: Lucee Documentation
Returns a new array, with all the elements reversed
Snowflake Documentation
docs.snowflake.com › en › sql-reference › functions › array_reverse
ARRAY_REVERSE | Snowflake Documentation
Returns an array with the elements of the input array in reverse order.
GameMaker
manual.gamemaker.io › monthly › en › GameMaker_Language › GML_Reference › Variable_Functions › array_reverse.htm
array_reverse
This function returns a new array with all the elements from the given array (or a range of it) in a reversed order.
Medium
josephcardillo.medium.com › how-to-reverse-arrays-in-javascript-without-using-reverse-ae995904efbe
How to Reverse Arrays in JavaScript Without Using .reverse() | by Joe Cardillo | Medium
January 31, 2022 - The first, reverseArray, takes an array as an argument and produces a new array that has the same elements in the inverse order. The second, reverseArrayInPlace, does what the reverse method does: it modifies the array given as argument in order ...
Apple Developer
developer.apple.com › documentation › swift › array › reverse()
reverse() | Apple Developer Documentation
Reverses the elements of the collection in place.
Reddit
reddit.com › r/learnjavascript › how do i reverse an array?
r/learnjavascript on Reddit: How do I reverse an array?
February 10, 2022 -
I'm trying to print this array in reverse order but I don't really know much about JavaScript and I thought I found a solution but it only works with numbers and I don't really know what to do. Any help I'm thankful for
Heres my code
var array = ["Item1, Item2, Item3"];
for(var a = array.length-1; a >= 0; a--) {
document.write(array[a]);
}
Top answer 1 of 7
8
There’s a reverse method on arrays. All you would need here is array.reverse() But you’re missing the closing quotes. Right now it’s an array of one string.
2 of 7
3
^ That works for non-number values as well. The problem with your current array is that it only has one string, "Item1, Item2, Item3". Try it with multiple strings, like var array = ["Item1", "Item2", "Item3"];
Microsoft Learn
learn.microsoft.com › en-us › kusto › query › array-reverse-function
array_reverse() - Kusto | Microsoft Learn
Reverses the order of the elements in a dynamic array.
Top answer 1 of 12
15
A while loop may be easier to conceptualize. Think of it as starting from both ends and swapping the two elements until you hit the middle.
i = len - 1;
j = 0;
while(i > j)
{
int temp = a[i];
a[i] = a[j];
a[j] = temp;
i--;
j++;
}
//Output contents of now-reversed array.
for(i = 0; i < len; i++)
printf("%d ", a[i])
2 of 12
5
void reverse_range(int* buffer, int left, int right)
{
while (left < right)
{
int temp = buffer[left];
buffer[left++] = buffer[right];
buffer[right--] = temp;
}
}
call it to reverse array
int a[3] = {1, 2, 3};
reverse_range(a, 0, 2);
Google
docs.cloud.google.com › bigquery › array functions
Array functions | BigQuery | Google Cloud Documentation
SELECT ARRAY_REVERSE([1, 2, 3]) AS reverse_arr /*-------------+ | reverse_arr | +-------------+ | [3, 2, 1] | +-------------*/
GeeksforGeeks
geeksforgeeks.org › php › php-array_reverse-function
PHP array_reverse() Function - GeeksforGeeks
May 10, 2023 - This inbuilt function of PHP is used to reverse the elements of an array including the nested arrays. Also, we have an option of preserving the key elements according to the user's choice.
Top answer 1 of 16
201
Javascript has a reverse() method that you can call in an array
var a = [3,5,7,8];
a.reverse(); // 8 7 5 3
Not sure if that's what you mean by 'libraries you can't use', I'm guessing something to do with practice. If that's the case, you can implement your own version of .reverse()
function reverseArr(input) {
var ret = new Array;
for(var i = input.length-1; i >= 0; i--) {
ret.push(input[i]);
}
return ret;
}
var a = [3,5,7,8]
var b = reverseArr(a);
Do note that the built-in .reverse() method operates on the original array, thus you don't need to reassign a.
2 of 16
62
Array.prototype.reverse()is all you need to do this work. See compatibility table.
var myArray = [20, 40, 80, 100];
var revMyArr = [].concat(myArray).reverse();
console.log(revMyArr);
// [100, 80, 40, 20]GeeksforGeeks
geeksforgeeks.org › problems › reverse-an-array › 1
Reverse an Array | Practice | GeeksforGeeks
You are given an array of integers arr[]. You have to reverse the given array. Note: Modify the array in place. Examples: Input: arr = [1, 4, 3, 2, 6, 5] Output: [5, 6, 2, 3, 4, 1]Explanation: The elements of the array are [1, 4, 3, 2, 6, 5
IBM
ibm.com › docs › en › uax
array_reverse()
Reverses the order of the elements in a dynamic array.