Ds \ Deque::rotate()函数是PHP中的一个内置函数,用于将Deque的元素旋转给定的旋转数。
用法:
public Ds\Deque::rotate( $rotations ):void
参数:该函数接受单个参数$rotations,该参数保存要旋转Deque中元素的旋转数。
返回值:该函数不返回任何值。
以下示例程序旨在说明PHP中的Ds \ Deque::rotate()函数:
程序1:
<?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);
// Rotating the deque by 2 positions
$deck->rotate(2);
echo("Rotated Deque\n");
// Display the Deque elements
print_r($deck);
?>
输出:
Elements of Deque Ds\Deque Object ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 [5] => 6 ) Rotated Deque Ds\Deque Object ( [0] => 3 [1] => 4 [2] => 5 [3] => 6 [4] => 1 [5] => 2 )
程序2:
<?php
// Declare a deque
$deck = new \Ds\Deque(["geeks", "for", "geeks", "practice"]);
echo("Elements of Deque\n");
// Display the Deque elements
print_r($deck);
// Rotating the deque by 2 positions
$deck->rotate(2);
echo("Rotated Deque\n");
// Display the Deque elements
print_r($deck);
?>
输出:
Elements of Deque Ds\Deque Object ( [0] => geeks [1] => for [2] => geeks [3] => practice ) Rotated Deque Ds\Deque Object ( [0] => geeks [1] => practice [2] => geeks [3] => for )
参考: http://php.net/manual/en/ds-deque.rotate.php
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注:本文由纯净天空筛选整理自barykrg大神的英文原创作品 PHP | Ds\Deque rotate() Function。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。