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:

  1. function compare(a, b) {
  2. if (a is less than b by some ordering criterion) {
  3. return -1;
  4. }
  5. if (a is greater than b by the ordering criterion) {
  6. return 1;
  7. }
  8. // 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