The Ds\Deque::set() function is an inbuilt function in PHP which is used to set the value at the given index in the Deque.
Syntax:
public Ds\Deque::set( $index, $value ) : void
Parameters: This function accept two parameters as mentioned above and described below:
- index: This parameter holds the index value on which the element is to be set.
- value: This parameter holds the value to be set at given index.
Return Value: This function does not return any value.
Below programs illustrate the Ds\Deque::set() function in PHP:
Program 1:
<?php   // Declare a deque $deck = new \Ds\Deque(["neveropen", "for", "neveropen", "practice"]);   echo("Elements of Deque\n");   // Display the Deque elements print_r($deck);   // Updating the deque element at index 2 $deck->set(2, "neveropen");    echo("Deque after setting value at index 2\n");   // Display the Deque elements print_r($deck);   ?> |
Output:
Elements of Deque
Ds\Deque Object
(
[0] => neveropen
[1] => for
[2] => neveropen
[3] => practice
)
Deque after setting value at index 2
Ds\Deque Object
(
[0] => neveropen
[1] => for
[2] => neveropen
[3] => practice
)
Program 2:
<?php   // Declare a deque $deck = new \Ds\Deque([1, 2, 3, 4, 5, 6]);   echo("Elements of Deque\n");   // Display the Deque elements print_r($deck);   // Updating the deque element at index 2 $deck->set(4, 10);    echo("Deque after setting value at index 2\n");   // Display the Deque elements print_r($deck);   ?> |
Output:
Elements of Deque
Ds\Deque Object
(
[0] => 1
[1] => 2
[2] => 3
[3] => 4
[4] => 5
[5] => 6
)
Deque after setting value at index 2
Ds\Deque Object
(
[0] => 1
[1] => 2
[2] => 3
[3] => 4
[4] => 10
[5] => 6
)
Reference: http://php.net/manual/en/ds-deque.set.php
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