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Kainat Asif

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

The ** Ds\Set::sorted() function** returns a set’s sorted copy.

The `sorted()`

function can be declared as shown in the code snippet below:

```
Ds\Set public Ds\Set::sorted ([ callable ＄comparator ])
```

** comparator**: This is the function that compares two values and returns

`0`

, `1`

, or `-1`

such that:- The
`comparator`

function returns`0`

if the first element equals the second element.

- The
`comparator`

function returns`1`

if the first element is less than the second.

- The
`comparator`

function returns`-1`

if the first element is greater than the second.

The `sorted()`

function returns a sorted copy of the set.

Consider the code snippet below, which demonstrates the use of the
`sorted()`

function:

<?php $s1 = new \Ds\Set([5, 80, 86, 53, 1]); print_r($s1->sorted()); ?>

**Line 3**: We declare a set named`s1`

.

**Line 5**: The`sorted()`

function is returns a sorted copy of`s1`

.

Consider another example of the `sorted()`

function in which a `comparator`

function is used:

<?php $s1 = new \Ds\Set([5, 80, 86, 53, 1]); print_r($s1->sorted(function($a, $b) { return $b <=> $a; })); ?>

**Line 3**: We declare a set named`s1`

.

**Line 5**: The`sorted()`

function returns a sorted copy of`s1`

.

The `comparator`

function sorts the set in descending order as it compares the numbers as follows:

- It returns -1 if the value on the right is greater than the value on the left.
- It returns 0 if values on either side are equal.
- It returns 1 if the value on the left is greater than the value on the right.

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Kainat Asif

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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