# How sort function works in JavaScript?

## How sort function works in JavaScript?

In **JavaScript** arrays have a **sort**( ) method that **sorts** the array items into an alphabetical order. The **sort**( ) method accepts an optional argument which is a **function** that compares two elements of the array. If the compare **function** is omitted, then the **sort**( ) method will **sort** the element based on the elements values.

## How do I sort an array in descending order in CPP?

To **sort** an **array** in reverse/**decreasing order**, you can use std::**sort** algorithm provided by STL. It sorts the elements of a container in the range pointed by the specified iterators using a comparator. The default comparator used is std::less which sorts the container in **ascending order** using operator< .

## How do you sort an array in STL?

**std**::**sort**() in C++ **STL** It generally takes two parameters , the first one being the point of the **array**/vector from where the **sorting** needs to begin and the second parameter being the length up to which we want the **array**/vector to get **sorted**.

## How do you sort an array in JSON?

The comparer function can be called to **sort** the **JSON array** as below: var **array** = [{...**Comparer function has the following format:**

- function compare(a, b) {
- if (a is less than b by some ordering criterion) {
- return -1;
- }
- if (a is greater than b by the ordering criterion) {
- return 1;
- }
- // a must be equal to b.

## How do you reverse an array without using another array?

Steps to **reverse an array without using another array** in C: Set i=0 to point to the first element and j=length-1 to point to the last element of the **array**. Run while loop with the condition i

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