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Ds\Deque::unshift

(PECL ds >= 1.0.0)

Ds\Deque::unshift — Adds values to the front of the deque

Açıklama

public Ds\Deque::unshift(mixed $values = ?): void

Adds values to the front of the deque, moving all the current values forward to make room for the new values.

Bağımsız Değişkenler

values

The values to add to the front of the deque.

Bilginize:
Multiple values will be added in the same order that they are passed.

Dönen Değerler

Hiçbir değer dönmez.

Örnekler

Örnek 1 Ds\Deque::unshift() example

<?php
$deque = new \Ds\Deque([1, 2, 3]);

$deque->unshift("a");
$deque->unshift("b", "c");

print_r($deque);
?>

Yukarıdaki örnek şuna benzer bir çıktı üretir:

Ds\Deque Object
(
    [0] => b
    [1] => c
    [2] => a
    [3] => 1
    [4] => 2
    [5] => 3
)

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User Contributed Notes 1 note

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hugo at fc dot up dot pt ¶

4 years ago


Where the documentation says "moving all the current values forward", while it sounds like the complexity would be O(N), I checked the code at https://github.com/php-ds/ext-ds/blob/master/src/ds/ds_deque.c#L366 and it is in fact O(1) for each element

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