Ds\Deque::sort

(PECL ds >= 1.0.0)

Ds\Deque::sort — Sorts the deque in-place

說(shuō)明

public Ds\Deque::sort(callable $comparator = ?): void

Sorts the deque in-place, using an optional comparator function.

參數(shù)

comparator

在第一個(gè)參數(shù)小于，等于或大于第二個(gè)參數(shù)時(shí)，該比較函數(shù)必須相應(yīng)地返回一個(gè)小于，等于或大于 0 的整數(shù)。

callback(mixed $a, mixed $b): int
警告

Returning non-integer values from the comparison function, such as float, will result in an internal cast to int of the callback's return value. So values such as 0.99 and 0.1 will both be cast to an integer value of 0, which will compare such values as equal.

返回值

沒(méi)有返回值。

范例

示例 #1 Ds\Deque::sort() example

<?php
$deque = new \Ds\Deque([4, 5, 1, 3, 2]);
$deque->sort();

print_r($deque);
?>

以上例程的輸出類(lèi)似于：

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

示例 #2 Ds\Deque::sort() example using a comparator

<?php
$deque = new \Ds\Deque([4, 5, 1, 3, 2]);

$deque->sort(function($a, $b) {
    return $b <=> $a;
});

print_r($deque);
?>

以上例程的輸出類(lèi)似于：

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